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Top 100 companies with in-house R&D in Italy

Tamtam tracks 1,418 companies with in-house R&D headquartered in Italy. This list ranks the 100 largest by number of employees on LinkedIn, led by Leonardo, Eni and Saipem. Their median headcount is 3,897. Half of them were founded in 1948 or later. The most common headquarters are Milan (21), Rome (14) and Turin (6).

🇮🇹 Italy100 companiesUpdated Nov 12, 2026

These Italian companies with in-house R&D are primarily large, established firms in key industrial sectors. They include multinationals like Leonardo, specializing in aerospace and defense, and Eni, an integrated energy business. Other prominent names are Saipem, a global leader in engineering for energy and infrastructure, and Enel Group, a major electricity operator. The list also features luxury brands such as Gucci and Prada Group, and manufacturing giants like Pirelli and Prysmian.

A notable pattern among these companies is the concentration of headquarters in a few major cities. Rome hosts several large entities including Ferrovie dello Stato Italiane S.p.A. and Sapienza Università di Roma. Milan is another hub, home to companies like Luxottica and Pirelli, while Turin is represented by Iveco Group and Reply, highlighting a geographical clustering of industrial and research activities.

#CompanyIndustryHeadquarters EmployeesFounded
1
Leonardoleonardo.com

Defense and security multinational company specializing in aerospace, cybersecurity, military systems, and advanced technology solutions

Defense and Space Manufacturing 🇮🇹 Rome 38,521 1948
2
Enieni.com

Integrated energy business, decarbonized products, renewable and retail, bio-refineries, biomethane, low-carbon energy, mobility services.

Oil and Gas 🇮🇹 Rome 32,259 n/a
3
Saipemsaipem.com

Global leader in engineering and construction for energy and infrastructure projects worldwide, offering offshore and onshore services with a focus on sustainability and innovation

Engineering Services 🇮🇹 Milan 32,000 1957
4
Enel Groupenel.com

Multinational company reshaping the future of energy, a leading integrated electricity operator. Distributes and supplies electricity to millions of end users.

Utilities 🇮🇹 Rome 31,218 1962
5
Ferrovie dello Stato Italiane S.p.A.fsitaliane.it

National rail infrastructure management, passenger transport services, logistics solutions, and urban regeneration projects across Italy.

Facilities Services 🇮🇹 Rome 28,071 n/a
6
Prysmianprysmian.com

A global leader in high-tech cables & systems for energy and telecom, driving the energy transition and digitalization worldwide

Manufacturing 🇮🇹 Milan 28,000 1872
7
Guccigucci.com

A leading luxury brand founded in Florence in 1921, redefining fashion and luxury with Italian craftsmanship, innovation, and creativity Part of global luxury group Kering

Retail Luxury Goods and Jewelry 🇮🇹 Casellina di Scandicci 20,795 1921
8
Iveco Groupivecogroup.com

A group of brands specializing in commercial vehicles, powertrain technologies, buses/coaches, defense equipment, construction vehicles, firefighting equipment, and financing

Motor Vehicle Manufacturing 🇮🇹 Turin 19,466 n/a
9
Luxotticaessilorluxottica.com

Luxottica designs, manufactures, and distributes fashion eyewear globally, with a focus on sustainability, universal beauty, and well-being

Retail Luxury Goods and Jewelry 🇮🇹 Milan 18,182 n/a
10
Replyreply.com

Specializing in innovative solutions using AI, big data, and digital media, this company delivers consulting and digital services across various sectors globally

IT Services and IT Consulting 🇮🇹 Turin 17,188 1996
11
Sapienza Università di Romauniroma1.it

A prestigious, historic university in Rome with a diverse range of academic programs, research opportunities, and international exchange programs for students and academics

Research Services 🇮🇹 Rome 16,981 1303
12
Pirellipirelli.com

A global leader in tyre production with a strong focus on technological innovation, high-end quality, and Italian heritage, catering to consumer markets worldwide

Motor Vehicle Manufacturing 🇮🇹 Milan 15,159 1872
13
Ferrariferrari.com

A renowned Italian company creates unique sports cars known for excellence, sportiness, and luxurious styling, winning multiple Formula One championships

Motor Vehicle Manufacturing 🇮🇹 Maranello 13,782 1947
14
MENARINI Groupmenarini.com

A leading international pharmaceutical company with products in various therapeutic areas, 9 R&D centers, 18 manufacturing plants, and global distribution

Pharmaceutical Manufacturing 🇮🇹 Florence 12,930 n/a
15
Prada Grouppradagroup.com

A luxury fashion group with diverse brands focusing on creative independence, sustainability, and global distribution of ready-to-wear, leather goods, and footwear

Retail Luxury Goods and Jewelry 🇮🇹 Milan 12,267 n/a
16
Engineering Groupeng.it

Leading digital transformation company with global presence, specializing in innovation, proprietary solutions, R&D, and diverse market expertise.

IT Services and IT Consulting 🇮🇹 Rome 11,815 1980
17
Politecnico di Milanopolimi.it

A scientific-technological university focusing on high-quality teaching, research, and collaboration with businesses worldwide to drive innovation and internationalization

Research Services 🇮🇹 Milan 10,413 n/a
18
Gruppo San Donatogrupposandonato.it

Large European healthcare group integrating hospitals, research, universities, clinics, focusing on human-centered care and international expansion.

Hospitals and Health Care 🇮🇹 Milan 9,474 1957
19
Università Cattolica del Sacro Cuoreunicatt.it

Leading Catholic university across Italy, offering diverse undergraduate, graduate, and master's programs, fostering research, and providing student services and global academic exchanges.

Higher Education 🇮🇹 8,679 1921
20
RINArina.org

Providing expert engineering, testing, inspection, and certification services across diverse markets with a focus on sustainable growth and client partnership.

Professional Services 🇮🇹 Genoa 8,259 n/a
21
IVECOiveco.com

Global leader in developing, manufacturing, and servicing a wide range of commercial and passenger vehicles, as well as special vehicles for defense and civil protection

Motor Vehicle Manufacturing 🇮🇹 Turin 7,874 n/a
22
Mapeimapei.com

A leading manufacturer of chemical products for the building industry, contributing to global architectural and infrastructural projects with a focus on specialization, internationalization, R&D, and sustainability

Chemical Manufacturing 🇮🇹 Milan 7,645 1937
23
OTBotb.net

An international fashion group that powers global brands, challenges norms, fosters creativity, and values sustainability while embracing digital innovation

Retail Luxury Goods and Jewelry 🇮🇹 Breganze 7,483 2002
24
Brembobrembo.com

Global leader in brake technology for automotive vehicles, supplying high performance systems to manufacturers worldwide, with expertise in racing components and over 500 championships won

Motor Vehicle Manufacturing 🇮🇹 7,408 n/a
25
Accenture Italiaaccenture.com

Global professional services firm specializing in digital, cloud, security, strategy, consulting, technology, and operations across multiple industries worldwide.

IT Services and IT Consulting 🇮🇹 Milan 7,209 n/a
26
FINCANTIERIfincantieri.com

Global shipbuilding group specializing in cruise, naval, and offshore vessels, along with high-tech shipbuilding, repairs, and components production with a history of 230 years

Shipbuilding 🇮🇹 Trieste 6,871 n/a
27
DOLCE&GABBANAdolcegabbana.com

Luxury fashion brand specializing in clothing, accessories, jewelry, and watches inspired by Italian art, tradition, and craftsmanship.

Retail Luxury Goods and Jewelry 🇮🇹 Milan 6,846 1985
28
Consiglio Nazionale delle Ricerchecnr.it

A public organization in Italy that conducts and promotes interdisciplinary research in various sectors for scientific, technological, and social development

Research Services 🇮🇹 Rome 6,744 1923
29
Coesia S.p.A.coesia.com

Specializes in innovative industrial machinery, packaging solutions, and high-performance transmissions for diverse sectors worldwide with extensive global presence.

Industrial Machinery Manufacturing 🇮🇹 Bologna 6,594 n/a
30
Barilla Groupbarillagroup.com

Italian family-owned food company producing pasta, sauces, bakery products, and crispbreads with focus on quality and sustainability.

Food and Beverage Manufacturing 🇮🇹 Parma 6,579 1877
31
Lavazza Grouplavazzagroup.com

Produces, markets, and distributes coffee products and machines for consumers and businesses globally.

Food and Beverage Services 🇮🇹 Turin 6,551 n/a
32
Politecnico di Torinopolito.it

A leading research university in Europe specializing in engineering and architecture, collaborating with industry and offering recruitment support to companies

Research Services 🇮🇹 Turin 6,406 1859
33
Dedalusdedalus.com

This company is a leading healthcare and diagnostic software provider in Europe, facilitating digital transformation for healthcare systems worldwide

IT Services and IT Consulting 🇮🇹 Milan 6,177 1982
34
Danieli Groupdanieli.com

A global leader in manufacturing plants and machines for the metals industry, offering innovative solutions across all production cycles for steel and non-ferrous metals

Industrial Machinery Manufacturing 🇮🇹 Buttrio 6,118 1914
35
Ariston Grouparistongroup.com

Global leader in sustainable climate and water comfort, offering renewable heating, ventilation, and solar thermal systems with advanced technology.

Manufacturing 🇮🇹 Fabriano 6,097 1930
36
Chiesi Groupchiesi.com

Research-driven international biopharmaceutical group developing innovative solutions for respiratory health, rare diseases, and specialty care, committed to social and environmental impact.

Pharmaceutical Manufacturing 🇮🇹 Parma 6,097 1935
37
Università degli Studi di Palermounipa.it

Established in 1806 as a university by Ferdinando III di Borbone, UniPa offers a wide range of courses, research opportunities, and specialized programs

Higher Education 🇮🇹 Palermo 6,032 1806
38
Università degli Studi di Bariuniba.it

Official page of a university in Bari, Italy, providing information and updates about various academic programs, research projects, and events

Research Services 🇮🇹 Bari 5,765 1925
39
Comaucomau.com

A global leader in industrial automation, offering technology for vehicle manufacturing, robots, logistics, machining centers, digital services, and training for Industry 40 challenges

Automation Machinery Manufacturing 🇮🇹 Grugliasco 5,405 1973
40
Terna SpAterna.it

An Italian energy transmission grid operator focused on ensuring the safety, quality, and cost-effectiveness of the electricity system while promoting sustainability and innovation

Utilities 🇮🇹 Rome 5,058 1999
41
Ospedale San Raffaelehsr.it

A high-specialization center within Gruppo San Donato focusing on medical, scientific research, and university education to deliver excellence in healthcare

Hospitals and Health Care 🇮🇹 Milan 4,965 1971
42
Università degli Studi di Genovaunige.it

An ancient university in Genoa, Italy, offering a wide range of study programs and promoting science, research, and societal values

Higher Education 🇮🇹 Genoa 4,932 1481
43
IMA Groupimagroup.com

A global leader in designing and manufacturing automatic machines for processing and packaging various products, with a focus on technological innovation and sustainability

Automation Machinery Manufacturing 🇮🇹 4,896 1961
44
Nestlé Health Sciencenestlehealthscience.com

Offers extensive science-based consumer care, medical nutrition, and pharmaceutical therapies, redefining health management through nutrition for prevention, maintenance, and treatment across global markets.

Food and Beverage Manufacturing 🇮🇹 Vers-chez-les-Blanc 4,478 n/a
45
Recordatirecordati.com

Global pharmaceutical company developing and commercializing medicines for common and rare diseases, dedicated to improving health and unlocking the full potential of life

Pharmaceutical Manufacturing 🇮🇹 Milan 4,331 1926
46
Zucchettizucchetti.it

Leading European software publisher offering POS, ERP, and HR solutions with a billion euro turnover, 8,000 employees, and 2,000 partners worldwide

IT Services and IT Consulting 🇮🇹 Lodi 4,184 n/a
47
Edisonedison.it

Leading energy company with 140 years history, operating in renewable production, gas supply, sustainable mobility, and energy services across Europe.

Utilities 🇮🇹 Milan 4,174 1884
48
INAIL, Istituto Nazionale Assicurazione contro gli Infortuni sul Lavoroinail.it

A public non-profit entity founded in 1883, provides insurance for all workers against work-related accidents, disabilities, health damage, and occupational diseases Additionally, supports injured workers with rehabilitation and reintegration assistance

Government Administration 🇮🇹 Rome 4,031 1883
49
MEImeisystem.com

Leading global manufacturer specializing in Italian-made dry cut lens edging machines for optical shops and industrial labs with comprehensive technical support services.

Machinery Manufacturing 🇮🇹 Ponte San Pietro 3,902 1985
50
MAIREgroupmaire.com

A technology and engineering group focused on enabling the Energy Transition, offering Sustainable Technology and E&C Solutions in various sectors worldwide

Engineering Services 🇮🇹 Milan 3,897 2005

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51
Valentinovalentino.com

A luxury fashion house founded in 1960, known for Haute Couture and ready-to-wear lines for women and men, as well as accessories and fragrances

Retail Luxury Goods and Jewelry 🇮🇹 Milan 3,864 n/a
52
Università degli Studi di Veronaunivr.it

A forward-thinking university with 24,000 students and 1,400 staff, emphasizing excellence in teaching, research, and innovation to meet student needs

Higher Education 🇮🇹 Verona 3,839 1982
53
Monclermonclergroup.com

A fashion brand founded in France in 1952, now based in Italy, known for combining style with mountain-inspired technology in outdoor and urban wear collections

Retail Luxury Goods and Jewelry 🇮🇹 Milan 3,838 1952
54
Gruppo Irengruppoiren.it

Multiutility company in Italy providing electricity, thermal energy, gas, water services, waste management, and technological services with focus on eco-friendly production and high-quality customer service

Utilities 🇮🇹 Reggio Emilia 3,829 1905
55
Fondazione Policlinico Universitario Agostino Gemelli IRCCSpoliclinicogemelli.it

A leading Italian hospital specializing in personalized medicine, innovative biotechnologies, and clinical care for a wide range of specialties, including oncology and rare diseases

Hospitals and Health Care 🇮🇹 Rome 3,810 n/a
56
Università degli Studi di Parmaunipr.it

Promoting knowledge creation, transfer, and progress through advanced education and research, fostering study for personal development, and contributing to societal welfare.

Higher Education 🇮🇹 Parma 3,712 962
57
Italgasitalgas.it

A leading Network Tech Company in gas, water, energy efficiency, and IT sectors, providing services to millions of customers in Italy and Greece

Utilities 🇮🇹 Milan 3,661 n/a
58
Avio Aeroavioaero.com

A specialized aerospace company designing, producing, and maintaining components and systems for the aeronautical industry with a focus on innovation and technological solutions

Aviation and Aerospace Component Manufacturing 🇮🇹 Rivalta di Torino 3,637 1908
59
Piaggio Grouppiaggiogroup.com

Leading producer of scooters, motorcycles, and light transport vehicles under various brands since 1884, with global production facilities and operational joint ventures

Motor Vehicle Manufacturing 🇮🇹 Pontedera (PI) 3,627 1884
60
Technogymtechnogym.com

A world-leading manufacturer of fitness equipment promoting Wellness through customized solutions for various settings and clientele worldwide since 1983

Wellness and Fitness Services 🇮🇹 Cesena 3,514 1983
61
Università di Trentounitn.it

The University of Trento is an institution focused on research and education, with a strong international dimension and emphasis on student well-being and academic excellence

Research Services 🇮🇹 Trento 3,511 n/a
62
Gpi Groupgpigroup.com

An international group specializing in software solutions for healthcare, utilizing cutting-edge technologies to transform systems and improve lives worldwide

IT Services and IT Consulting 🇮🇹 Trento 3,332 1988
63
Humanitas Research Hospitalhumanitas.it

Highly specialized hospital with pathology-specific centers, advanced emergency care, innovative outpatient services, and internationally recognized research in immune-related diseases.

Hospitals and Health Care 🇮🇹 Rozzano 3,329 1996
64
Bonfigliolibonfiglioli.com

Design and manufacture of gearmotors, planetary gearboxes, drive systems, and inverters for industrial automation, mobile machinery, renewable energy.

Industrial Machinery Manufacturing 🇮🇹 Calderara di Reno 3,312 1956
65
PROMETEON TYRE GROUPprometeon.com

A tire manufacturer with a focus on industry, transport, AGRO, and OTR applications, offering innovative solutions and embracing diversity

Motor Vehicle Manufacturing 🇮🇹 Milan 3,236 2017
66
De'Longhi Groupdelonghigroup.com

Leading global household appliance group specializing in coffee machines, food preparation, kitchen appliances, and personal blenders with diverse brand portfolio.

Manufacturing 🇮🇹 Treviso 3,080 n/a
67
Safilosafilogroup.com

A leading eyewear company founded in 1934, specializing in designing, manufacturing, and distributing optical frames, sunglasses, sports eyewear, and helmets globally

Retail Apparel and Fashion 🇮🇹 Padua 3,000 1934
68
Università Ca'​ Foscari Veneziaunive.it

A prestigious university in Venice, Italy, offering a wide range of programs in economics, languages, sciences, and humanities

Higher Education 🇮🇹 Venice 3,000 1868
69
Delta Galil Industriesdeltagalil.com

Global manufacturer and marketer of Private Label apparel products for men, women, and children, with expertise in fashion trends, technologies, and fabrics

Retail Apparel and Fashion 🇮🇹 Caesarea 2,986 1975
70
Biessebiesse.com

International manufacturer of integrated processing lines for various materials, serving furniture, construction, automotive, and aerospace industries worldwide with a global network

Machinery Manufacturing 🇮🇹 Pesaro 2,957 n/a
71
Ansaldo Energiaansaldoenergia.com

A leading international power generation company offering turnkey construction, power equipment manufacturing, service, and activities in nuclear and renewables

Engines and Power Transmission Equipment Manufacturing 🇮🇹 Genoa 2,936 1853
72
Scm Groupscmgroup.com

A global leader in machinery and industrial components, providing advanced solutions for processing various materials across multiple industries worldwide

Machinery Manufacturing 🇮🇹 Rimini 2,928 n/a
73
FPT Industrialfptindustrial.com

A global company with expertise in engines and electric solutions for various applications, emphasizing innovation, performance, customer satisfaction, and sustainability

Machinery Manufacturing 🇮🇹 Turin 2,908 2011
74
Telespaziotelespazio.com

Provides comprehensive space services, from system design to satellite control, Earth observation, communication, and navigation, utilizing AI for advanced applications improving life and addressing climate change.

Defense and Space Manufacturing 🇮🇹 Rome 2,864 1961
75
Angelini Industriesangeliniindustries.com

Operates globally in health, industrial technology, and consumer goods sectors, focusing on growth, R&D, environmental impact reduction, and worker safety.

Manufacturing 🇮🇹 Rome 2,855 n/a
76
Diasorindiasorin.com

Italian biotechnology company producing and marketing in vitro diagnostics reagent kits for immunodiagnostics, molecular diagnostics, and Life Science products

Biotechnology Research 🇮🇹 Saluggia 2,826 n/a
77
FAAC Technologiesfaactechnologies.com

Design and production of high-performance access automation, parking control systems, and intelligent software solutions for residential and industrial sectors.

Appliances, Electrical, and Electronics Manufacturing 🇮🇹 Zola Predosa 2,813 n/a
78
Kering Eyewearkeringeyewear.com

Designs, develops, and distributes luxury eyewear for a diverse portfolio of 15 prestigious fashion and lifestyle brands worldwide.

Retail Apparel and Fashion 🇮🇹 Padua 2,813 2014
79
Alfasigmaalfasigma.com

A leading Italian pharmaceutical company focused on developing innovative therapeutic solutions in gastroenterology, vascular, metabolic areas, nutraceuticals, and medical foods

Pharmaceutical Manufacturing 🇮🇹 Bologna 2,791 n/a
80
TeamSystemteamsystem.com

Provides digital business management, fintech, ecommerce, SME rating, and HR solutions. Supports digital transformation for companies, professionals, and SMEs through innovative software and services.

Software Development 🇮🇹 Pesaro 2,788 n/a
81
Boltonbolton.com

A family-owned multinational producing and distributing over 60 quality brands, committed to making everyday life more enjoyable, beautiful, and delicious, while driving positive change

Manufacturing 🇮🇹 Milan 2,786 1949
82
Azienda sanitaria universitaria integrata del Trentinoasuit.tn.it

A public healthcare provider in Trento, Italy, serving over 500,000 citizens and 9 million tourists annually with hospitals, health centers, and rehabilitation services

Hospitals and Health Care 🇮🇹 Trento 2,756 1995
83
Sogefi Groupsogefigroup.com

A global leader in engine filtration and vehicle suspension components, committed to innovation, research, quality, and environmental sustainability

Motor Vehicle Parts Manufacturing 🇮🇹 Milan 2,734 1980
84
University of Naples Federico IIunina.it

Enhancing higher education and research training to cultivate competent professionals in a historically rich institution dedicated to excellence and innovation

Higher Education 🇮🇹 Naples 2,730 1224
85
SACMIsacmi.com

An international group manufacturing machines and plants for Ceramics, Packaging, Food, and Automation industries with over 80 subsidiary companies worldwide

Machinery Manufacturing 🇮🇹 Imola 2,696 1919
86
ENEAenea.it

An Italian organization specialized in research, development, and promotion of technologies for energy efficiency, renewable sources, nuclear energy, environmental protection, and more

Research Services 🇮🇹 Rome 2,659 n/a
87
CITTA' DELLA SALUTE E DELLA SCIENZA DI TORINO - SEDE MOLINETTEto.it

The company is a healthcare organization formed from the merger of three hospitals, specializing in orthopedics, traumatology, and children's healthcare in Turin

Hospitals and Health Care 🇮🇹 Sassari 2,652 n/a
88
Università degli Studi di Ferraraunife.it

A prestigious university in Italy, founded in 1391, offering a wide range of undergraduate, graduate, and research programs, fostering innovation and entrepreneurship through spin-off companies

Higher Education 🇮🇹 Ferrara 2,646 1391
89
TXT GROUPtxtgroup.com

An international engineering software solutions provider supporting high-tech markets throughout product life-cycles, with over 1000 skilled team members worldwide

IT Services and IT Consulting 🇮🇹 Cologno Monzese 2,625 n/a
90
Haier Europecorporate.haier-europe.com

Global leader in home appliances, part of a Fortune Global 500 company, focusing on IoT for smart home solutions with successful brands worldwide

Manufacturing 🇮🇹 Vimercate 2,603 n/a
91
Zambonzambon.com

Develops innovative pharmaceutical and healthcare solutions, including treatments for respiratory, urological, and serious diseases like Parkinson's, and offers patient support programs.

Pharmaceutical Manufacturing 🇮🇹 Bresso 2,595 1906
92
SDFsdfgroup.com

A leading manufacturer of tractors, agricultural machines, and diesel engines, focused on satisfying customer needs through advanced technology and global expansion

Machinery Manufacturing 🇮🇹 Treviglio 2,574 1927
93
Stevanato Groupstevanatogroup.com

Provider of glass containers, plastic components, contract manufacturing, and analytical services for biopharmaceutical drug delivery and diagnostics.

Pharmaceutical Manufacturing 🇮🇹 Piombino Dese 2,430 1949
94
Ducati Motor Holdingducat.it

A renowned motorbike manufacturer known for high-performance, innovative motorcycles sold globally, competing in MotoGP and World Championships, offering job opportunities

Motor Vehicle Manufacturing 🇮🇹 Bologna 2,409 1926
95
INFNinfn.it

An Italian research organization specializing in subnuclear, nuclear, and astroparticle physics, developing advanced technologies and collaborating with industry and academia

Research Services 🇮🇹 Rome 2,332 1951
96
Artsana Groupartsana.com

A global leader in the parenting space, offering a wide range of brands focused on family, society, and the environment through innovative solutions and products

Manufacturing 🇮🇹 Grandate 2,332 1946
97
Maseratimaserati.com

Luxury automotive brand known for elegance, style, sportiness, and performance, boasting a long history of innovation and a glorious heritage

Motor Vehicle Manufacturing 🇮🇹 Modena 2,267 1914
98
Tenovatenova.com

A sustainable, innovative, and reliable partner in metals and mining industries, designing technologies to reduce costs, save energy, and improve working conditions

Industrial Machinery Manufacturing 🇮🇹 Castellanza 2,258 2007
99
Kerakoll Groupkerakoll.com

Multinational company producing diverse construction materials and solutions, focusing on innovation and improving living environments worldwide.

Wholesale Building Materials 🇮🇹 Sassuolo 2,255 1968
100
Datalogicdatalogic.com

Designs and produces barcode readers, mobile computers, sensors, RFID vision, and laser marking systems for various industries, increasing efficiency and quality.

Computers and Electronics Manufacturing 🇮🇹 Lippo di Calderara di Reno 2,212 1972

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Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 12, 2026.

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