# The 50 largest consulting firms in Lazio

Tamtam tracks 59 consulting firms headquartered in Lazio. This list ranks the 50 largest by number of employees on LinkedIn, led by Almaviva Group, DGS and Italferr S.p.A.. Their median headcount is 310. Half of them were founded in 2000 or later. The most common headquarters are Rome (48).

The consulting firms in Lazio are predominantly large and mid-sized companies focused on IT services, civil engineering, and business consulting. Almaviva Group provides digital innovation, DGS offers security and digital transformation, and Italferr S.p.A. specializes in infrastructure projects. MCS Management Consulting & Selection offers HR and talent development services.

The data shows a strong concentration of headquarters in Rome, indicating the city's role as a central hub for these professional services. Many of these firms, such as PROGER s.p.a. and Italconsult SpA, were founded in the mid to late 20th century, with a mix of more recent establishments like Almaviva Group (2005) and Be | Shaping the Future (2008).

🇮🇹 Lazio · 50 companies · Updated Nov 11, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Almaviva Group](https://www.tamtam.ai/c/almaviva-group) (almavivagroup.com)<br>Provides digital innovation and ICT solutions globally, supporting business model transformation and competitiveness across public and private sectors. | IT Services and IT Consulting | 🇮🇹 Rome | 52,112 | 2005 |
| 2 | [DGS](https://www.tamtam.ai/c/dgs) (dgsspa.com)<br>Specialized group offering security and digital transformation services, with a focus on excellence, innovation, and partnership within the ICT sector in Italy | IT Services and IT Consulting | 🇮🇹 Rome | 3,068 | 1997 |
| 3 | [Italferr S.p.A.](https://www.tamtam.ai/c/italferr-s-p-a) (gruppofsengineering.it)<br>A leading Italian engineering firm with expertise in infrastructure projects for rail, road, and port, offering design, management, and consultancy services internationally | Civil Engineering | 🇮🇹 Rome | 1,896 |  |
| 4 | [MCS Management Consulting & Selection](https://www.tamtam.ai/c/mcs-management-consulting-and-selection) (mcs-selection.it)<br>A managerial and organizational consulting company offering customized projects in HR, talent development, and executive search services, with international partnerships | Business Consulting and Services | 🇮🇹 Rome | 1,803 | 1977 |
| 5 | [Be \| Shaping the Future](https://www.tamtam.ai/c/be-shaping-the-future) (be-tse.it)<br>A leading consulting company offering business consulting, IT, and digital services to financial, insurance, and industrial clients across Europe | Business Consulting and Services | 🇮🇹 Milan | 1,150 | 2008 |
| 6 | [Formez](https://www.tamtam.ai/c/formez) (formez.it)<br>The company supports public administrations in developing organizational innovation projects, improving service quality, and promoting international cooperation and communication | Government Administration | 🇮🇹 Rome | 909 | 1965 |
| 7 | [Sistemi Informativi, an IBM Company](https://www.tamtam.ai/c/sistemi-informativi-an-ibm-company) (sistinf.it)<br>A leading IT solutions company part of IBM Italia Group, offering innovative solutions and specialized consulting services to various industries | IT Services and IT Consulting | 🇮🇹 Rome | 907 | 1979 |
| 8 | [PROGER s.p.a.](https://www.tamtam.ai/c/proger-s-p-a) (proger.it)<br>An international company offering Italian engineering and management expertise in building, infrastructure, energy, oil & gas, sustainability, security with global presence | Design Services | 🇮🇹 Rome | 886 | 1951 |
| 9 | [Topnetwork S.p.A.](https://www.tamtam.ai/c/topnetwork-s-p-a) (topnetwork.it)<br>A service agency supporting digital transformation with innovative solutions, integrating AI, blockchain, Cloud, Data Science, IoT, robotics, and more | IT Services and IT Consulting | 🇮🇹 Rome | 836 | 2003 |
| 10 | [Italconsult SpA](https://www.tamtam.ai/c/italconsult-spa) (italconsult.com)<br>Italian engineering consulting company specializing in transportation infrastructure, water, environment, energy, and civil structures, with a focus on social-economic development worldwide | Civil Engineering | 🇮🇹 Rome | 794 | 1957 |
| 11 | [POLYGON SPA](https://www.tamtam.ai/c/polygon-spa) (polygon.eu)<br>A European company specializing in medical device management, embracing change in the face of global health challenges to serve individuals, communities, and businesses | Hospitals and Health Care | 🇮🇹 Rome | 708 |  |
| 12 | [SPERI](https://www.tamtam.ai/c/speri) (sperispa.com)<br>Providing architecture, engineering, planning, management, sustainability, and safety services for buildings, infrastructure, and property management projects. | Civil Engineering | 🇮🇹 Rome | 529 | 1973 |
| 13 | [Mediatica Digital SpA](https://www.tamtam.ai/c/mediatica-digital-spa) (mediaticadigital.it)<br>We are a leading company specializing in digital platform development and operations, serving a wide range of sectors with innovative solutions | IT Services and IT Consulting | 🇮🇹 Rome | 508 | 2000 |
| 14 | [Eustema S.p.A.](https://www.tamtam.ai/c/eustema-s-p-a) (eustema.it)<br>A consulting and software engineering company in Italy, providing ICT solutions to public administrations and businesses in telecom, transportation, utilities, and services sectors | IT Services and IT Consulting | 🇮🇹 Rome | 466 | 1989 |
| 15 | [Artelia Italia](https://www.tamtam.ai/c/artelia-italia) (it.arteliagroup.com)<br>A leading engineering company in Italy, specializing in building, industry, energy, transportation, and urban development projects with a focus on efficiency and sustainability | Civil Engineering | 🇮🇹 Rome | 438 | 2001 |
| 16 | [APS Evolution](https://www.tamtam.ai/c/aps-evolution) (groupmaire.com)<br>A global energy group specializing in the development and operation of industrial plants within the energy sector | Oil and Gas | 🇮🇹 Rome | 421 |  |
| 17 | [IRD Engineering](https://www.tamtam.ai/c/ird-engineering) (irdeng.com)<br>Leading independent Italian engineering consultancy providing comprehensive infrastructure solutions worldwide, certified to ISO standards and with a strong track record in international projects | Civil Engineering | 🇮🇹 Rome | 393 | 2000 |
| 18 | [NEVERHACK Italy](https://www.tamtam.ai/c/neverhack-italy) (neverhack.com)<br>A multinational company specializing in providing innovative ICT solutions across various industries, focusing on expansion through partnerships, M&A, and global development | IT Services and IT Consulting | 🇮🇹 Rome | 382 | 2001 |
| 19 | [Studio professionale di consulenza fiscale, legale e finanziaria](https://www.tamtam.ai/c/studio-professionale-di-consulenza-fiscale-legale-e-finanziaria) (tlfadvisory.it)<br>The company is a group of professionals providing business, financial, tax, and legal consulting services, with expertise in ordinary, extraordinary, and subsidized finance | Financial Services | 🇮🇹 Rome | 381 | 2005 |
| 20 | [Progetti Europa & Global S.p.A](https://www.tamtam.ai/c/progetti-europa-and-global-s-p-a) (pegitaly.it)<br>An Engineering and Contracting Company with 40 years of experience in the Oil & Gas industry, specializing in upstream process units, transportation facilities, and automation systems | Oil and Gas | 🇮🇹 Rome | 369 | 1998 |
| 21 | [SOGESID](https://www.tamtam.ai/c/sogesid) (sogesid.it)<br>An engineering and technical assistance company working with the Ministry of Ecological Transition to plan and implement environmental projects nationwide | Government Administration | 🇮🇹 Rome | 368 | 1994 |
| 22 | [Deep Blue](https://www.tamtam.ai/c/deep-blue) (dblue.it)<br>A research and consultancy firm specializing in human-centred design and validation in various industries, offering services in human factors, safety, and sustainability | Research Services | 🇮🇹 Rome | 360 | 2001 |
| 23 | [Adamis Business Innovation](https://www.tamtam.ai/c/adamis-business-innovation) (adamis.it)<br>Adamis Group Italia is an image company that offers personalized services with a focus on details, creativity, and dedication to provide emotional experiences for clients | Personal Care Product Manufacturing | 🇮🇹 Rome | 356 | 1999 |
| 24 | [Benigni & K](https://www.tamtam.ai/c/benigni-and-k) (benignibk.com)<br>Benigni&K is a professional studio specializing in various areas, focusing on growth through mergers and acquisitions to provide tailored services globally | Business Consulting and Services | 🇮🇹 Rome | 315 |  |
| 25 | [Softlab S.p.A.](https://www.tamtam.ai/c/softlab-s-p-a) (soft.it)<br>A publicly traded international company offering Business Advisory, ICT Consulting, and Digital Entertainment services through a network of professionals and innovative solutions | IT Services and IT Consulting | 🇮🇹 Rome | 310 |  |
| 26 | [Soft Strategy](https://www.tamtam.ai/c/soft-strategy) (softstrategy.it)<br>Italian group of companies specializing in professional services and ICT solutions for medium to large businesses, focusing on Digital Transformation & Innovation Serving various industries | Business Consulting and Services | 🇮🇹 Rome | 305 | 2006 |
| 27 | [TRACTEBEL ENGINEERING S.R.L](https://www.tamtam.ai/c/tractebel-engineering-s-r-l) (tractebel-engie.com)<br>A global engineering and consultancy firm with expertise in sustainable energy, offering innovative solutions for projects worldwide with a focus on quality and safety | Oil and Gas | 🇮🇹 Rome | 274 |  |
| 28 | [Key Partner](https://www.tamtam.ai/c/key-partner) (keypartner.com)<br>Consulting firm specializing in digital transformation, strategic planning, and cybersecurity, supporting companies with innovative technology and data-driven growth solutions. | Business Consulting and Services | 🇮🇹 Rome | 270 | 2010 |
| 29 | [SiliconDev S.p.A.](https://www.tamtam.ai/c/silicondev-s-p-a) (silicondev.com)<br>Silicondev provides technological services and outsourcing for medium to large companies, offering consultancy, security solutions, and advanced technological solutions in various sectors | Software Development | 🇮🇹 Rome | 256 | 2003 |
| 30 | [Softlab tech](https://www.tamtam.ai/c/softlab-tech) (soft.it)<br>A tech company specializing in System Integration & Service Operation projects, with expertise across various industries and recognized for its innovative solutions | IT Services and IT Consulting | 🇮🇹 Rome | 255 | 1985 |
| 31 | [Energent S.p.A.](https://www.tamtam.ai/c/energent-s-p-a) (energent.it)<br>A historic company with over 300 employees, offering IT services to both public and private sectors, focusing on infrastructure, application development, security, and ICT technologies | IT Services and IT Consulting | 🇮🇹 Rome | 254 | 2013 |
| 32 | [PTS](https://www.tamtam.ai/c/pts) (ptsclas.com)<br>Specializing in strategic and operational consultancy, innovation, finance, and communication across various sectors in both public and private settings | Business Consulting and Services | 🇮🇹 Rome | 250 | 1995 |
| 33 | [Whitehall Reply](https://www.tamtam.ai/c/whitehall-reply) (reply.com)<br>Whitehall Reply specializes in developing innovative technology solutions for Public Administration, combining consulting, project development, and excellent technological skills for citizens and service management | IT Services and IT Consulting | 🇮🇹 Rome | 249 |  |
| 34 | [NexumStp S.p.a. Società Benefit](https://www.tamtam.ai/c/nexumstp-s-p-a-societa-benefit) (nexumstp.it)<br>Nexum is an alliance of professionals dedicated to supporting small and medium-sized businesses with innovation and expertise in various sectors | Business Consulting and Services | 🇮🇹 Rome | 245 | 2018 |
| 35 | [Intersistemi Italia S.P.A](https://www.tamtam.ai/c/intersistemi-italia-s-p-a) (intersistemi.it)<br>A group of companies specializing in ICT, project management, security, geomatics, healthcare, multimedia solutions, network infrastructure, market research, and renewable energy | IT Services and IT Consulting | 🇮🇹 Rome | 224 |  |
| 36 | [Prisma Srl](https://www.tamtam.ai/c/prisma-srl) (prismacompany.it)<br>A technology company based in Italy specializing in software design and development, IT consultancy, and providing advanced computer solutions to improve business strategies | IT Services and IT Consulting | 🇮🇹 Rome | 213 | 1984 |
| 37 | [IET](https://www.tamtam.ai/c/iet) (iet.it)<br>An innovative and rapidly growing company specializing in Advanced Analytics, AI/ML, Big Data, Cloud, and other cutting-edge technologies to solve clients' challenges | IT Services and IT Consulting | 🇮🇹 Rome | 211 | 2016 |
| 38 | [Olidata SpA](https://www.tamtam.ai/c/olidata-spa) (olidata.com)<br>A top European PC producer with a leading position in Italy, offering a wide range of computer solutions for both home and business use | IT Services and IT Consulting | 🇮🇹 Rome | 204 | 1982 |
| 39 | [ISS INTERNATIONAL SpA](https://www.tamtam.ai/c/iss-international-spa) (iss-international.com)<br>A global company offering engineering services in the Energy sector, specializing in Project Management, Engineering, Training, and Digital Twin Platform development | Oil and Gas | 🇮🇹 Rome | 201 | 2004 |
| 40 | [Wh](https://www.tamtam.ai/c/wh) (webharbinger.com)<br>A JobTech company revolutionizing work organization through flexible workforce solutions and artificial intelligence tools | IT Services and IT Consulting | 🇮🇹 Rome | 200 | 2015 |
| 41 | [Challenge Network](https://www.tamtam.ai/c/challenge-network) (challengenetwork.it)<br>A large network offering strategic and operational consulting services in corporate training, master programs, events, and communication, focusing on continuous improvement | Professional Training and Coaching | 🇮🇹 Rome | 190 | 2000 |
| 42 | [IGEAM](https://www.tamtam.ai/c/igeam) (igeam.it)<br>A company specializing in sustainable development consulting and engineering, providing integrated solutions in environment, health & safety for businesses and organizations | Business Consulting and Services | 🇮🇹 Rome | 186 | 1979 |
| 43 | [Kibernetes](https://www.tamtam.ai/c/kibernetes) (kibernetes.it)<br>A leading national operator in Public Administration services, specializing in tax, accounting, software, and HR services for over 40 years | IT Services and IT Consulting | 🇮🇹 Rome | 186 |  |
| 44 | [Iniziativa](https://www.tamtam.ai/c/iniziativa) (iniziativa.cc)<br>Providing advisory services to businesses and public administrations for over thirty years to maximize development opportunities | Financial Services | 🇮🇹 Rome | 120 |  |
| 45 | [Major Bit Group](https://www.tamtam.ai/c/major-bit-group) (majorbit.com)<br>A company with 30 years of experience in ICT consulting and training, specializing in software development, business intelligence, AI, and operational procedures engineering | IT Services and IT Consulting | 🇮🇹 Rome | 114 | 1993 |
| 46 | [Progress Group srl](https://www.tamtam.ai/c/progress-group-srl) (progress.it)<br>Certified Zucchetti partner in central Italy specializing in software solutions for time and attendance management, HR, business software, and access control | IT Services and IT Consulting | 🇮🇹 Cassino | 110 | 1993 |
| 47 | [Crisma](https://www.tamtam.ai/c/crisma) (crismaitalia.it)<br>Specializing in enterprise Business Intelligence projects, offering end-to-end solutions with expert analysts, designers, and technologists for high-performance data solutions and advanced data mining methods | IT Services and IT Consulting | 🇮🇹 Rome | 89 | 2003 |
| 48 | [GMG group](https://www.tamtam.ai/c/gmg-group) (gmggroup.it)<br>GMG is a management consulting firm in Italy, specializing in organizational and strategic consulting, financial business, risk management, and professional training | Business Consulting and Services | 🇮🇹 Rome | 67 | 1996 |
| 49 | [PNO Innovation Italia](https://www.tamtam.ai/c/pno-innovation-italia) (pnoconsultants.com)<br>CiaoTech, part of the PNO Group, provides innovative solutions and funding support for companies and research centers across Europe | Financial Services | 🇮🇹 Rome | 66 | 1984 |
| 50 | [Hotels Doctors - Consulenza Alberghiera](https://www.tamtam.ai/c/hotels-doctors-consulenza-alberghiera) (hotelsdoctors.com)<br>An independent team of hotel consultants specializing in solving management issues, improving operations, sales, marketing, and revenue management for hotels | Hospitality | 🇮🇹 Rome | 45 | 2011 |

## How this list is built

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 11, 2026.

## More company lists in Lazio

- [The largest companies in Lazio](https://www.tamtam.ai/l/largest-companies-lazio) (1,243)
- [Multinational companies in Lazio](https://www.tamtam.ai/l/multinational-companies-lazio) (226)
- [Retail chains in Lazio](https://www.tamtam.ai/l/retail-chains-lazio) (128)
- [Companies with in-house R&D in Lazio](https://www.tamtam.ai/l/r-and-d-companies-lazio) (120)
- [Critical infrastructure operators in Lazio](https://www.tamtam.ai/l/critical-infrastructure-operators-lazio) (105)
- [Public sector organisations in Lazio](https://www.tamtam.ai/l/public-sector-organisations-lazio) (102)
- [Financial services firms in Lazio](https://www.tamtam.ai/l/financial-services-firms-lazio) (98)
- [IT services companies in Lazio](https://www.tamtam.ai/l/it-services-companies-lazio) (84)
- [IT Services and IT Consulting companies in Lazio](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-lazio) (78)
- [Manufacturers in Lazio](https://www.tamtam.ai/l/manufacturers-lazio) (77)
- [Companies with a mobile app in Lazio](https://www.tamtam.ai/l/companies-with-mobile-app-lazio) (75)
- [Financial Services companies in Lazio](https://www.tamtam.ai/l/financial-services-companies-lazio) (61)
- [Education providers in Lazio](https://www.tamtam.ai/l/education-companies-lazio) (60)
- [Professional services firms in Lazio](https://www.tamtam.ai/l/professional-services-firms-lazio) (58)
- [Corporate groups and holding companies in Lazio](https://www.tamtam.ai/l/holding-companies-lazio) (51)
- [Software Development companies in Lazio](https://www.tamtam.ai/l/software-development-companies-lazio) (48)
- [Hospitality companies in Lazio](https://www.tamtam.ai/l/hospitality-companies-lazio) (46)
- [Family-owned companies in Lazio](https://www.tamtam.ai/l/family-owned-companies-lazio) (46)
- [Aerospace and defence companies in Lazio](https://www.tamtam.ai/l/aerospace-and-defense-companies-lazio) (45)
- [E-commerce companies in Lazio](https://www.tamtam.ai/l/ecommerce-companies-lazio) (45)
- [Hotel and hospitality groups in Lazio](https://www.tamtam.ai/l/hospitality-groups-lazio) (43)
- [Consumer goods companies in Lazio](https://www.tamtam.ai/l/consumer-goods-companies-lazio) (42)
- [Healthcare providers in Lazio](https://www.tamtam.ai/l/healthcare-providers-lazio) (42)
- [Luxury brands in Lazio](https://www.tamtam.ai/l/luxury-brands-lazio) (39)

## The same list elsewhere in Italy

- [Consulting firms in Italy](https://www.tamtam.ai/l/consulting-firms-italy) (337)
- [Consulting firms in Lombardy](https://www.tamtam.ai/l/consulting-firms-lombardy) (134)
- [Consulting firms in Emilia-Romagna](https://www.tamtam.ai/l/consulting-firms-emilia-romagna) (26)
- [Consulting firms in Milan](https://www.tamtam.ai/l/consulting-firms-milan) (104)
- [Consulting firms in Rome](https://www.tamtam.ai/l/consulting-firms-rome) (56)

---

Source: https://www.tamtam.ai/l/consulting-firms-lazio