Company lists · Data refreshed September 2026

Top 25 Advertising companies based in Greece

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

Compiled by the RevenueBase Data Team Data refreshed Sep 7, 2026 576 companies tracked

RevenueBase identified 576 advertising companies headquartered in Greece as of September 2026 and tracks 4,373 professional contacts across them, including 928 with verified work emails and 173 with mobile numbers. Athens is the largest hub.

This list covers advertising companies 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 September 7, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 7, 2026 86% judged on-target in blind review

576Companies

4,373Contacts tracked

928Verified emails

173Mobile numbers

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The 25 largest advertising companies based in Greece

Ranked by team size

Top 25 of 576 advertising companies based in Greece, ranked by team size, largest first. Data refreshed Sep 7, 2026. RevenueBase Smart Search rates how each company's information relates to advertising companies: 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	Gerakas, GreeceHQ checked Sep 7, 2026	201-500	276 contacts →
	“Ogilvy Greece is a group of 400 professionals passionate about advertising, public relations, technology and social platforms.” Source: company website · checked Sep 7, 2026
2	MSPS	Indirect evidence	Alimos, GreeceHQ checked Sep 7, 2026	201-500	180 contacts →
	“MSPS is an award-winning Integrated Marketing and Sales Services Agency that consists of talented, fun and creative individuals.” Source: company website · checked Sep 7, 2026
3	The Newtons Laboratory	Indirect evidence	Chalandri, GreeceHQ checked Sep 7, 2026	51-200	114 contacts →
	“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: company website · checked Sep 7, 2026
4	Mozaik	Indirect evidence	Athens, GreeceHQ checked Sep 7, 2026	11-50	98 contacts →
	“Mozaik is a leading marketing and communications agency, with extensive experience in providing strategies that are creative, innovative, sophisticated and results oriented.” Source: company website · checked Sep 7, 2026
5	SPC	Indirect evidence	Athens, GreeceHQ checked Sep 7, 2026	51-200	89 contacts →
	“SPC, The Brand Lever is the company that created and consolidated the field of sales promotion in Greece.” Source: company website · checked Sep 7, 2026
6	Baas Digital	Indirect evidence	Athens, GreeceHQ checked Sep 7, 2026	11-50	73 contacts →
	“Opening up in the center of Athens in 2011, BAAS DIGITAL has evolved into a 360° digital performance agency serving a global clientele.” Source: company website · checked Sep 7, 2026
7	Socialab	Strong evidence	Athens, GreeceHQ checked Sep 7, 2026	51-200	66 contacts →
	“Socialab is a digital-first advertising agency based in Athens, Greece.” Source: company website · checked Sep 7, 2026
8	Solid Havas	Strong evidence	Marousi, GreeceHQ checked Sep 7, 2026	51-200	59 contacts →
	“Solid Havas is an independent 360o communication agency offering its clients fully integrated effective solutions through Advertising, PR, Digital, BTL and CSR services.” Source: company website · checked Sep 7, 2026
9	Admine	Indirect evidence	Thessaloniki, GreeceHQ checked Sep 7, 2026	51-200	55 contacts →
	“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: company website · checked Sep 7, 2026
10	Humble	Indirect evidence	GreeceHQ checked Sep 7, 2026	51-200	46 contacts →
	“Humble, is one of the leading independent Agencies in Greece, with 55 employees.” Source: company website · checked Sep 7, 2026
11	Advengers	Indirect evidence	Nea Ionia, GreeceHQ checked Sep 7, 2026	11-50	42 contacts →
	“We are a new breed in the marketing & communication industry.” Source: company website · checked Sep 7, 2026
12	Rascal	Indirect evidence	Kifissia, GreeceHQ checked Sep 7, 2026	11-50	42 contacts →
	“We are Rascal: The creative agency with the experience and ability to manage brands in the digital world.” Source: company website · checked Sep 7, 2026
13	Digital4u	Indirect evidence	Athens, GreeceHQ checked Sep 7, 2026	11-50	40 contacts →
	“Digital4u is a Digital Agency that was founded in 2013 and over the years, the company has excelled its services.” Source: company website · checked Sep 7, 2026
14	Globe ONE Digital	Indirect evidence	Athens, GreeceHQ checked Sep 7, 2026	11-50	40 contacts →
	“At Globe One Digital, we are more than just a digital agency - we are passionate innovators who have been driving digital communication forward for over 25 years.” Source: company website · checked Sep 7, 2026
15	VALUE	Indirect evidence	Néa Smírni, GreeceHQ checked Sep 7, 2026	11-50	40 contacts →
	“We don't use AI.” Source: company website · checked Sep 7, 2026
16	Radical Communications	Indirect evidence	Agios Dimitrios, GreeceHQ checked Sep 7, 2026	11-50	38 contacts →
	“Radical Communications SA is an award-winning 360 marketing and communications agency, headquartered in Athens.” Source: company website · checked Sep 7, 2026
17	The Vscope	Indirect evidence	Palaio Faliro, GreeceHQ checked Sep 7, 2026	11-50	34 contacts →
	“Founded in 2019 by Vassilis Polyzos & Lefteris Kallergis, THE VSCOPE Marketing Agency provides today's businesses with top-notch Strategic and Digital Marketing Services that work…” Source: company website · checked Sep 7, 2026
18	Adweb Digital HUB	Indirect evidence	Chalandri, GreeceHQ checked Sep 7, 2026	11-50	34 contacts →
	“At ADWEB, we help brands, agencies, and publishers thrive in an ever-evolving digital ecosystem by combining strategy, creativity, and data.” Source: company website · checked Sep 7, 2026
19	BOO Productions S.A	Strong evidence	Marousi, GreeceHQ checked Sep 7, 2026	11-50	33 contacts →
	“Over the past 19 years, Boo Productions has received numerous awards at leading domestic advertising festivals, including most recently the prestigious Production Company of the…” Source: company website · checked Sep 7, 2026
20	Mediacube	Indirect evidence	Agia Paraskevi, GreeceHQ checked Sep 7, 2026	11-50	32 contacts →
	“MEDIACUBE is an native digital agency with 22 years’ worth of experience in the digital landscape and an Award-Winning Digital Marketing Agency & Social Media Agency of the Year.” Source: company website · checked Sep 7, 2026
21	Creace SA	Strong evidence	Marousi, GreeceHQ checked Sep 7, 2026	11-50	32 contacts →
	“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: company website · checked Sep 7, 2026
22	Attp Advertising	Strong evidence	Gazi - Athens, GreeceHQ checked Sep 7, 2026	11-50	31 contacts →
	“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: company website · checked Sep 7, 2026
23	Digitalup	Indirect evidence	Athens, GreeceHQ checked Sep 7, 2026	11-50	30 contacts →
	“DigitalUp is a dynamic company, founded in 2014 and located in Athens, in the field of Digital Marketing.” Source: company website · checked Sep 7, 2026
24	Savvy Partners	Strong evidence	Athens, GreeceHQ checked Sep 7, 2026	11-50	30 contacts →
	“Being a mere 19 years on the Communication /Advertising Universe, we find it normal to feel like teenagers (some don’t seem to consider it a virtue, but our clients do).” Source: company website · checked Sep 7, 2026
25	BRAVE	Strong evidence	Khalándrion, GreeceHQ checked Sep 7, 2026	11-50	29 contacts →
	“We are Brave, an independent award winning Creative & Advertising agency based in Athens, Greece.” Source: company website · checked Sep 7, 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 companies. 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 companies.
Partial evidence: Its own public description names part of advertising companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name advertising companies. 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 576 advertising companies based in Greece

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Advertising companies based in Greece at a glance

As of Sep 7, 2026

21.2%Verified-email coverage

4.0%Mobile-number coverage

7.6Average contacts per company

1-10Median size (employees)

29.9%Largest-city concentration · Athens

Sep 7, 2026Page data refreshed

Companies by employee count

1-10

399

11-50

148

51-200

201-500

501-1,000

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

8570–30

6631–60

161–90

190–180

3180+

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 companies, 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 companies”. 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 companies), 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 companies, 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, 928 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 September 7, 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 companies by metro

Advertising companies in Athens172
Advertising companies in Thessaloniki27

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 companies, 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 companies are there based in Greece?

RevenueBase identified 576 advertising companies headquartered in Greece as of September 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 companies?

Athens leads with 172 headquartered companies, followed by Thessaloniki (27) 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 928 verified decision-maker contacts tracked across these 576 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 7, 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.