Company lists · Data refreshed August 2026

Top 25 Advertising agencies based in Greece

Name: Advertising agencies based in Greece
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Aug 30, 2026 435 companies tracked

RevenueBase identified 435 advertising agencies headquartered in Greece as of August 2026 and tracks 3,417 professional contacts across them, including 655 with verified work emails and 131 with mobile numbers. Athens is the largest hub.

This list covers advertising agencies headquartered in Greece, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed August 30, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase Smart Search rating on every row Refreshed Aug 30, 2026 86% judged on-target in blind review

435Companies

3,417Contacts tracked

655Verified emails

131Mobile numbers

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The 25 largest advertising agencies based in Greece

Ranked by team size

Top 25 of 435 advertising agencies based in Greece, ranked by team size, largest first. Data refreshed Aug 30, 2026. RevenueBase Smart Search rates how each company's information relates to advertising agencies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Ogilvy Greece	Strong evidence	Athens, Greece	201-500	277 contacts →
	Strong evidence “Ogilvy Greece is a group of 400 professionals passionate about advertising, public relations, technology and social platforms.” Source: RevenueBase Database · checked Aug 30, 2026
2	The Newtons Laboratory	Indirect evidence	Chalandri, Greece	51-200	114 contacts →
	Indirect evidence “Clients are tired of fighting on their own, we fight with them." We are the Newtons Laboratory because we stand for: Creativity, Fresh ideas, Innovative thinking, Passion for…” Source: RevenueBase Database · checked Aug 30, 2026
3	Tempo OMD Hellas	Indirect evidence	Athens, Greece	51-200	100 contacts →
	Indirect evidence “Tempo OMD Hellas is part of OMD network, the world’s largest media agency people, in over 120 offices.” Source: RevenueBase Database · checked Aug 30, 2026
4	SPC	Indirect evidence	Athens, Greece	51-200	90 contacts →
	Indirect evidence “SPC, The Brand Lever is the company that created and consolidated the field of sales promotion in Greece.” Source: RevenueBase Database · checked Aug 30, 2026
5	Closer	Indirect evidence	Thessaloniki, Greece	51-200	89 contacts →
	Indirect evidence “CLOSER is a value creation company from the world's most creative people.” Source: RevenueBase Database · checked Aug 30, 2026
6	Socialab	Strong evidence	Greece	51-200	66 contacts →
	Strong evidence “Socialab is a digital-first advertising agency based in Athens, Greece.” Source: RevenueBase Database · checked Aug 30, 2026
7	Solid Havas	Strong evidence	Greece	51-200	59 contacts →
	Strong evidence “Solid Havas is an independent 360o communication agency offering its clients fully integrated effective solutions through Advertising, PR, Digital, BTL and CSR services.” Source: RevenueBase Database · checked Aug 30, 2026
8	Admine	Indirect evidence	Greece	51-200	55 contacts →
	Indirect evidence “Admine is a leading communications agency with strong digital DNA, manned by a group of mad-men & mad-women all bridging consumers and brands using cutting edge communication…” Source: RevenueBase Database · checked Aug 30, 2026
9	Humble	Indirect evidence	Greece	51-200	47 contacts →
	Indirect evidence “Humble, is one of the leading independent Agencies in Greece, with 55 employees.” Source: RevenueBase Database · checked Aug 30, 2026
10	UM Greece	Indirect evidence	Athens, Greece	51-200	44 contacts →
	Indirect evidence “Our people-first approach creates limitless possibilities, making everything we do intelligently driven, diversely courageous, business- and brand-obsessed, and dedicated to…” Source: RevenueBase Database · checked Aug 30, 2026
11	WHY	Strong evidence	Greece	11-50	44 contacts →
	Strong evidence “We are an independent and fully integrated communications agency with a deep-rooted advertising instinct and drive for innovation.” Source: RevenueBase Database · checked Aug 30, 2026
12	Radical Communications	Indirect evidence	Athens, Greece	11-50	38 contacts →
	Indirect evidence “Radical Communications SA is an award-winning 360 marketing and communications agency, headquartered in Athens.” Source: RevenueBase Database · checked Aug 30, 2026
13	Adweb Digital HUB	Indirect evidence	Chalandri, Greece	11-50	34 contacts →
	Indirect evidence “At ADWEB, we help brands, agencies, and publishers thrive in an ever-evolving digital ecosystem by combining strategy, creativity, and data.” Source: RevenueBase Database · checked Aug 30, 2026
14	Creace SA	Strong evidence	Greece	11-50	32 contacts →
	Strong evidence “We’re a creative marketing & advertising agency which believes that idea should make an impact-no matter the brand, no matter the communication path.” Source: RevenueBase Database · checked Aug 30, 2026
15	Attp Advertising	Strong evidence	Athens, Greece	11-50	31 contacts →
	Strong evidence “attp is an advertising agency based in Athens Greece, head of a Group of specialized companies that offer a full and comprehensive range of communication services to international…” Source: RevenueBase Database · checked Aug 30, 2026
16	BRAVE	Strong evidence	Greece	11-50	29 contacts →
	Strong evidence “We are Brave, an independent award winning Creative & Advertising agency based in Athens, Greece.” Source: RevenueBase Database · checked Aug 30, 2026
17	Vitamin Media 360 Advertising Agency	Strong evidence	Athens, Greece	11-50	29 contacts →
	Strong evidence “In short, we give integrated 360 Advertising Services.” Source: RevenueBase Database · checked Aug 30, 2026
18	MINDS	Strong evidence	Thessaloniki, Greece	11-50	22 contacts →
	Strong evidence “Minds is a multifaceted communication agency with over 20 years of experience in the fields of strategic advertising.” Source: RevenueBase Database · checked Aug 30, 2026
19	Publicis Groupe Greece	Indirect evidence	Greece	51-200	22 contacts →
	Indirect evidence “Publicis Groupe Greece is a Communications Group that operates under a highly modular Connecting Company model, a unique platform that gives clients plug & play access to our…” Source: RevenueBase Database · checked Aug 30, 2026
20	FMN	Indirect evidence	Alimos, Greece	11-50	21 contacts →
	Indirect evidence “At FMN, we view communication as a journey.” Source: RevenueBase Database · checked Aug 30, 2026
21	FCB Gnomi	Strong evidence	Greece	51-200	19 contacts →
	Strong evidence “FCB GNOMI is the Athens based branch of the FCB global advertising network.” Source: RevenueBase Database · checked Aug 30, 2026
22	Viral Passion	Indirect evidence	Kifisia, Greece	11-50	17 contacts →
	Indirect evidence “We live and breathe conversions, ROAS and CPCs.” Source: RevenueBase Database · checked Aug 30, 2026
23	K2 Design	Indirect evidence	Greece	11-50	15 contacts →
	Indirect evidence “We believe that great brands deserve the world stage.” Source: RevenueBase Database · checked Aug 30, 2026
24	Cicero Advertising	Strong evidence	Athens, Greece	11-50	14 contacts →
	Strong evidence “CICERO is a content-driven advertising agency that provides unique business strategy, design and marketing services, while remaining dedicated to being different and creating…” Source: RevenueBase Database · checked Aug 30, 2026
25	2yolk	Indirect evidence	Athens, Greece	11-50	14 contacts →
	Indirect evidence “2yolk is an award-winning brand consulting and design agency based in Athens, Greece.” Source: RevenueBase Database · checked Aug 30, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: advertising agencies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names advertising agencies.
Partial evidence: Its own public description names part of advertising agencies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name advertising agencies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 435 advertising agencies based in Greece

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Advertising agencies based in Greece at a glance

As of Aug 30, 2026

19.2%Verified-email coverage

3.8%Mobile-number coverage

7.9Average contacts per company

1-10Median size (employees)

33.3%Largest-city concentration · Athens

Aug 30, 2026Page data refreshed

Companies by employee count

1-10

291

11-50

118

51-200

201-500

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among advertising agencies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Greece whose own description of what they do matches “advertising agencies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names advertising agencies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among advertising agencies, and records with no verified work email. Companies headquartered outside Greece are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 655 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on August 30, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Advertising agencies by metro

Advertising agencies in Athens145

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names advertising agencies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many advertising agencies are there based in Greece?

RevenueBase identified 435 advertising agencies headquartered in Greece as of August 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Ogilvy Greece, headquartered in Athens, tops this list with the largest team on record.

Which city has the most advertising agencies?

Athens leads with 145 headquartered companies, followed by Thessaloniki (21) and Chalandri (8).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 655 verified decision-maker contacts tracked across these 435 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on August 30, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.