This selection of advertising services companies in Europe primarily features large groups, many of which are global networks. WPP, a creative transformation company, and Publicis Groupe, which helps clients transform their marketing and digital businesses, are prominent examples. Other notable firms include Clear Channel Europe, a leading outdoor media company, and Havas, a global communications network. This list highlights the diverse specializations within the sector, ranging from creative agencies to media buying and outdoor advertising.
A clear pattern among these companies is the concentration of headquarters in London, indicating its role as a major hub for the advertising industry in Europe. Publicis Groupe is based in Paris, Havas in Puteaux, and JCDecaux in Neuilly-sur-Seine. While some companies like BAR (Milan) and MERCADO (Lisbon) were founded in the 2010s, many of the largest firms have a longer history, with Clinic founded in 1983 and JCDecaux in 1964.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 | 41,040 | ||||
| 2 |
Publicis Groupepublicisgroupe.com
Helps clients transform their marketing and digital businesses, providing expertise in communications, media, data, and technology across 100+ countries. |
41,020 | |||
| 3 |
Clinicclinic.co.uk
Independent creative agency crafting bold ideas to drive action and change, with a focus on people's experiences and problem-solving for brands |
19,192 | |||
| 4 |
Clear Channel Europeclearchanneleurope.com
Leading outdoor media company across 14 markets, transforming advertising through data-driven innovations and infrastructure for brands and positive global impact. |
15,206 | |||
| 5 |
BARcivediamoalbar.com
Custom websites for all types and sizes Whether sober, elegant, or quirky, they create unique sites tailored to match your personality |
12,967 | |||
| 6 |
EssenceMediacomessencemediacom.com
EssenceMediacom is a leading agency focused on delivering marketing breakthroughs for brands through integrated media solutions and continuous learning |
12,000 | |||
| 7 |
Publicis Mediapublicisgroupe.com
A global media company within Publicis Groupe, employing data-driven solutions and platform-based technologies to deliver client value and drive growth internationally |
11,033 | |||
| 8 | 11,029 | ||||
| 9 |
HH Globalhhglobal.com
Global leader in tech-enabled creative production and procurement, partnering with clients and suppliers worldwide to deliver impactful creative solutions. |
8,626 | |||
| 10 |
Wavemakerwavemakerglobal.com
Wavemaker specializes in Provocative Planning to drive growth by combining machine learning and human intelligence for better outcomes and consumer experiences #GrowFearless #PositiveProvocation |
7,200 | |||
| 11 |
Mindsharemindshareworld.com
A media services company that accelerates enduring and sustainable business growth for clients through data and behavioral science, connecting brands with consumers |
6,729 | |||
| 12 |
Insightsnospace.com
Global leader in marketing data and analytics, providing deep insights into consumer behavior to inspire growth for clients worldwide |
6,668 | |||
| 13 |
MERCADOagenciamercado.com
Creative agency specializing in relationship marketing strategies, digital tools, and metrics to help brand owners achieve key objectives |
6,557 | |||
| 14 |
JCDecauxjcdecaux.com
Global leader in outdoor advertising, specializing in street furniture, transport advertising, and billboard displays worldwide. |
6,312 | |||
| 15 |
Saleslandsalesland.net
A global sales specialist recruiting, training, and leading commercial teams across 13 countries, focusing on direct and indirect selling, marketing, and advertising |
5,854 | |||
| 16 |
BOUTIQUEweareboutique.co.uk
A fiercely independent agency focused on delivering ambitious media, digital, PR, and social solutions for clients driven by growth and results |
5,825 | |||
| 17 |
PHDphdmedia.com
Global media agency network combining data, technology, and human expertise to create innovative campaigns and transform brand experiences worldwide. |
5,700 | |||
| 18 | 5,692 | ||||
| 19 |
Zenithzenithmedia.com
A global agency specializing in media, data, technology, commerce, and content to drive successful business outcomes for clients worldwide |
5,382 | |||
| 20 |
nientelinkedin.com
No information about company activities, services, or products available in the provided content to describe company operations. |
5,342 | |||
| 21 | 5,067 | ||||
| 22 |
FIRMAwearefirma.com
A full-service Branding and Innovation agency creating successful brands by combining actionable insights, strategic thinking, and creative imagination |
4,889 | |||
| 23 |
Saatchi & Saatchisaatchi.com
Global communications and advertising network creating impactful creative ideas that build strong emotional connections between consumers and brands worldwide. |
4,737 | |||
| 24 |
DEPTยฎdept.global
A pioneering technology and marketing services company creating global digital experiences for top brands, committed to sustainability and innovation |
4,701 | |||
| 25 |
MediaComessencemediacom.com
An innovative marketing agency within EssenceMediacom GroupM, specializing in creating breakthroughs for brands Follow @EssenceMediacom for more |
4,671 | |||
| 26 |
MECmecglobal.com
It is a global media agency formed by MEC and Maxus, focusing on innovative marketing and advertising solutions for clients. |
4,489 | |||
| 27 | 4,218 | ||||
| 28 |
Strรถer SE & Co. KGaAstroeer.de
Leading German media house, offering outdoor advertising, digital media, dialog marketing, e-commerce, and Data as a Service solutions, reaching millions of users. |
3,924 | |||
| 29 | 3,918 | ||||
| 30 |
OLIVER | The Brandtech Groupoliverinside.ai
Design and operate bespoke in-house agencies and ecosystems for brands, driving business growth and innovative marketing solutions globally. |
3,870 | |||
| 31 |
Publicis Re:Sourcespublicisresources.com
Provides technology solutions and business services including finance, accounting, legal, and procurement for agencies, enabling innovation and client transformation. |
3,796 | |||
| 32 |
WPP Productionwppproduction.com
Global content production company integrating creative producers, AI, and virtual production to deliver innovative, fast, and scalable marketing content solutions. |
3,507 | |||
| 33 |
Hogarthwppproduction.com
Creative production company combining craft, insight, and technology to bring creative work to life across global locations. |
3,262 | |||
| 34 |
JK - Agencyjkgroupe.com
Strategic communication & engagement firm specializing in designing social experiences to create innovative ideas and build impactful projects |
3,135 | |||
| 35 |
Mothermotherfamily.com
A globally respected, independent creative agency with offices worldwide, specializing in creating culturally impactful ideas for a diverse range of clients |
3,065 | |||
| 36 |
Solocalsolocal.com
Providing digital solutions to businesses in France through Search Local and Digital Marketing services, focusing on local content, personalized marketing, and growth acceleration |
2,935 | |||
| 37 |
Italiaonlineitaliaonline.it
Italy's largest internet company offers digital solutions, directories, marketing services, and VAS to a wide range of clients, connecting millions of users with businesses |
2,719 | |||
| 38 |
Advantage Smollanadvantagesmollan.com
Local experts providing consistent service and strong client relationships, leveraging global insights, innovation, and technology for growth. |
2,706 | |||
| 39 |
MCIwearemci.com
Global agency specializing in engagement and marketing through live & virtual events, strategic communications, and community solutions to drive innovation and growth |
2,585 | |||
| 40 |
K Particulierk-particulier.fr
Specialized Health Communication Agency focused on Medical Education, producing high-value content for healthcare professionals in areas such as professional obligations, doctor-patient communication, and digital platforms |
2,462 | |||
| 41 | 2,389 | ||||
| 42 |
Customer Servicecustomerservice.inc
The company specializes in creating advertising content that captures people's interests, following Howard Gossage's belief from 1950 |
2,381 | |||
| 43 | 2,373 | ||||
| 44 |
Iris Londoniris-worldwide.com
The Participation Agency helps brands grow using creativity, data-driven media, and people to create cultural moments and connect with audiences worldwide |
2,365 | |||
| 45 |
iProspectiprospect.com
Global digital-first media agency specializing in media strategy, digital expertise, and audience knowledge to drive performance-driven brand building for iconic brands worldwide |
2,325 | |||
| 46 |
Social Mediasocial-media.co.uk
Results-driven online marketing agency specializing in SEO, SMM, PPC, and BRM solutions for clients in various industries Focus on monitoring, maximizing effectiveness, and brand image |
2,319 | |||
| 47 |
Jellyfishjellyfish.com
A marketing performance company specializing in navigating and connecting platforms to drive growth for global brands through tech, media, creativity, and data expertise |
2,259 | |||
| 48 |
DJ ~ Lavr0Vlavr0vclub.com
Specializes in techno acid nightclub DJing for afterparties, with expertise in social media marketing and strong support for feminism |
2,220 | |||
| 49 |
Marketizonmarketizon.com
Innovative multi-channel marketing technologies leader dedicated to creating effective campaigns, transforming users into followers, and achieving business goals through digital marketing strategies |
2,123 | |||
| 50 |
Cubacuba-london.co.uk
Integrated marketing agency specializing in creating campaigns based on insights to drive sales for clients through advertising, direct, digital, film, branding, and repro services |
2,073 | |||
Want more companies than this list?This page shows the largest ones only. Connect to Tamtam to see every company that matches, filter by size, industry or growth, and reach their decision-makers. | |||||
| 51 |
Young Professionalsyoung-professionals.uk
This company connects schools and colleges with companies to help place school leavers into apprenticeships and work experience programs with top brands |
2,029 | |||
| 52 |
MiQwearemiq.com
Programmatic media partnership leveraging agnostic buying platforms, audience intelligence, and TV data to deliver high-performance advertising campaigns for various brands and agencies. |
1,965 | |||
| 53 |
Omnicom Media UKomnicommediagroup.com
Connects diverse media agencies using a marketing orchestration system to provide relevant consumer experiences and inclusive environments through award winning strategic planning. |
1,963 | |||
| 54 |
Hi-techhi-tech.hr
Digital agency specializing in internet and mobile advertising, creating campaigns and projects for domestic and international clients with a passionate and dynamic team |
1,935 | |||
| 55 |
We Are Socialwearesocial.com
A global creative agency specializing in social media, crafting ideas that resonate with online communities to reach targeted audiences effectively |
1,926 | |||
| 56 |
Facebook Advertising
The company specializes in Facebook and LinkedIn marketing campaigns, social media solutions, application development, and consulting for businesses |
1,905 | |||
| 57 |
ALTAVIAaltavia-group.com
Global network providing Retail Marketing Services with solutions for retail brands worldwide Specializing in Commercial Activation, offering consulting, creation, execution, and installation services |
1,856 | |||
| 58 |
heaven | Hopscotch Groupeheaven.paris
Next-generation advertising agency connecting brands with web communities through digital strategies, influencer marketing, social media, brand content, and creative technology for international clients. |
1,853 | |||
| 59 |
Librarylibrary-agency.com
A creative agency based in Brighton, specializing in working with food, drink, and lifestyle brands that are purpose-driven Certified B Corp |
1,842 | |||
| 60 |
GPL CONSULTING UK LTD
The company provides a wide range of consultancy services in management, defense, law enforcement, IT, along with web development, telecommunication, software solutions, and international trade |
1,679 | |||
| 61 |
APPLE TREEappletree.agency
Independent strategic communications agency specializing in innovative approaches to solve communication challenges with a unique NEW THINKING methodology. |
1,653 | |||
| 62 |
Awin Globalawin.com
Global affiliate marketing platform connecting businesses and customers across multiple sectors, providing technology, insights, and sustainable growth solutions. |
1,626 | |||
| 63 | 1,593 | ||||
| 64 |
Kitchenkitchensoho.com
A team of creative individuals who develop brand-focused ideas in-house through research, planning, design, and more for impactful results |
1,559 | |||
| 65 |
APS Grouptheapsgroup.com
A global marketing and communications company founded in 1961, focusing on empowering brands through creativity, content creation, and production expertise |
1,479 | |||
| 66 |
Tour and Travelagency.org.uk
Discover top-rated tour operators and travel companies in the UK and USA through customer reviews to find the perfect one for your trip |
1,447 | |||
| 67 |
Serviceplan Grouphouse-of-communication.com
Largest independent agency group in Europe combining creative, media, data, experience, and commerce disciplines under one roof. |
1,445 | |||
| 68 |
TCCwearetcc.co.uk
Creative agency specializing in branding and strategy since 1985, offering tailored solutions for brand challenges through identity, campaigns, and strategic thinking |
1,441 | |||
| 69 |
Yellsmartrecruiters.com
A leading UK provider of digital marketing services connecting businesses and customers with free and paid profiles, websites, and advertising solutions |
1,438 | |||
| 70 | 1,432 | ||||
| 71 | 1,425 | ||||
| 72 | 1,420 | ||||
| 73 |
Paragon UKparagon.world
Providing data-driven, multichannel marketing, transactional communications, and automated workflows to digitize and enhance customer communication journeys securely and compliantly. |
1,411 | |||
| 74 | 
ME MYSELF AND I LLCstop.tiklavairogs.tet.lv
This company no longer exists, but LinkedIn won't delete it |
1,360 | |||
| 75 |
Influencerinfluencer.com
Global agency delivering creator-first solutions through proprietary technology and platform partnerships to drive measurable brand impact, humanize businesses, and connect with audiences. |
1,346 | |||
| 76 |
adm Indiciaadm-indicia.com
Create and activate meaningful brand experiences that drive ROI by connecting with audiences throughout the customer journey effectively. |
1,334 | |||
| 77 |
MEDIAPOSTmediaposte.fr
Targeted distribution of advertising mail and proximity communication solutions using geographical and behavioral data to support client acquisition and loyalty across France. |
1,306 | |||
| 78 |
madriddigitalmarketingawards.org
Novadect specializes in intellectual property investigations with a team of legal, criminology, and private detective experts dedicated to combating piracy and protecting rights |
1,292 | |||
| 79 |
Unitinguniting.it
An collaborative ecosystem of 5 specialized units in marketing and communication, working together to create immersive brand experiences with a strong commitment to sustainability |
1,285 | |||
| 80 |
Graphicgraphic.nl
Graphic is a creative marketing agency specializing in advertising, PR, events, and fundraising, with a focus on sustainability and social initiatives |
1,256 | |||
| 81 |
Indipendent Consultant
Provides expert consulting services across various sectors to help clients achieve their specific business objectives and improve operations. |
1,240 | |||
| 82 |
CPM Francecpm-int.com
CPM France combines sales, marketing, and customer experience to influence the entire customer journey with engaging, energetic, and optimistic approaches |
1,200 | |||
| 83 |
M+C Saatchi Groupmcsaatchi.com
Global creative network combining creativity, data, and technology to build brands, solve business challenges, and create cultural impact. |
1,189 | |||
| 84 |
Anything is Possibleaip.media
An integrated, independent agency specializing in Media, Tech, and Creative services We offer transformative marketing solutions through close relationships with clients |
1,184 | |||
| 85 | 1,179 | ||||
| 86 |
Seven.One Entertainment Groupseven.one
Integrated entertainment group combining channels, content, and marketing to create multiscreen brands and premium entertainment for diverse audiences. |
1,178 | |||
| 87 |
Pardgrouppardgroup.com
A multinational field marketing and retail services agency specializing in high-end projects for premium and luxury brands worldwide Services include design, production, and installation |
1,161 | |||
| 88 |
Design Bridge and Partnersdesignbridge.com
Creative company specializing in brand strategy, identity, communications, and management, serving iconic global brands and innovative startups worldwide. |
1,151 | |||
| 89 |
T&Ptandpgroup.com
A full-service independent agency network partnering with WPP & GroupM, combining diverse talent to transform brand building with innovation & creativity |
1,114 | |||
| 90 |
MODmarketingondemand.dk
Specializing in targeted marketing for small to medium businesses, with a focus on IT solutions and technical products, freeing up time for clients to focus on their strengths |
1,107 | |||
| 91 |
Revenuerevenue.it
A web marketing company helping businesses grow through the internet, focusing on ROI and working on performance-based partnerships with shared goals and results |
1,107 | |||
| 92 |
Performicsperformics.com
A performance marketing agency that converts consumer intent into revenue for top brands through personalized digital experiences across paid, owned, and earned media |
1,100 | |||
| 93 | 1,098 | ||||
| 94 |
Jung von Mattjvm.com
A highly awarded advertising agency group offering creative and efficient marketing communication services to clients worldwide across various channels and disciplines |
1,097 | |||
| 95 |
TLC Worldwidetlc-worldwide.com
This company has been offering free experiences to clients' customers for 30 years, connecting them with thousands of rewarding activities and services globally |
1,093 | |||
| 96 |
LOCALiQ_UKlocaliq.co.uk
Trusted local news provider offering digital marketing services to help businesses reach new customers, backed by extensive experience and data |
1,085 | |||
| 97 |
Creative Agency
A London-based Digital Marketing Agency offering services in Paid Search, SEO, Programmatic, Affiliate, and Social Media marketing for small to medium-sized businesses |
1,066 | |||
| 98 |
Content Writercontentwriter.co
Professional copywriting agency offering writing services in 7 languages, including SEO-optimized articles, website content, product descriptions, and more Fast, high-quality work guaranteed |
1,062 | |||
| 99 |
Industrieindustrieweb.fr
Industry portal in French for engineers, showcasing latest product news without bias, allowing companies to reach industrial market without advertising |
1,045 | |||
| 100 |
Scholz & Friendss-f.family
Scholz & Friends offers comprehensive resources for clients to share their stories and ideas across various areas with a collaborative and inclusive team culture |
1,022 | |||
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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 14, 2026.
More company lists in Europe
- The largest companies in Europe 213,522
- Multinational companies in Europe 42,020
- Companies with in-house R&D in Europe 20,166
- Retail chains in Europe 19,258
- Manufacturers in Europe 18,152
- Professional services firms in Europe 13,697
- SaaS companies in Europe 13,682
- Software Development companies in Europe 12,949
- Financial services firms in Europe 12,940
- IT Services and IT Consulting companies in Europe 11,705
- IT services companies in Europe 11,376
- Hardware manufacturers in Europe 10,563
- Family-owned companies in Europe 9,878
- Critical infrastructure operators in Europe 9,814
- Financial Services companies in Europe 9,478
- Consulting firms in Europe 8,899
- Public sector organisations in Europe 8,565
- Education providers in Europe 7,925
- Companies with a mobile app in Europe 7,898
- Distributors and wholesalers in Europe 7,573
- Retail companies in Europe 6,240
- Healthcare providers in Europe 6,132
- E-commerce companies in Europe 5,864
- Hotel and hospitality groups in Europe 5,739
The same list elsewhere
- Advertising Services companies in the world 7,500
- Advertising Services companies in France 2,355
- Advertising Services companies in the United Kingdom 952
- Advertising Services companies in Belgium 222
- Advertising Services companies in Germany 178
- Advertising Services companies in Switzerland 154
- Advertising Services companies in Spain 138
- Advertising Services companies in the Netherlands 105
- Advertising Services companies in Italy 95
- Advertising Services companies in Poland 48
- Advertising Services companies in Sweden 25