Company lists · Data verified August 2026

Top 25 Advertising consulting firms based in Greece

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

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 266 companies tracked

There are 266 advertising consulting firms headquartered in Greece (RevenueBase, August 2026). RevenueBase tracks 2,216 professional contacts across them, including 407 with verified work emails and 96 with mobile numbers. Athens is the largest hub.

This list covers advertising consulting firms headquartered in Greece, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.

266Companies

2,216Contacts tracked

407Verified emails

96Mobile numbers

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The 25 largest advertising consulting firms based in Greece

Ranked by team size

Top 25 of 266 advertising consulting firms based in Greece, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	Ogilvy Greece	Athens	201-500	277	2
2	The Newtons Laboratory	Chalandri	51-200	114	65
3	SPC	Athens	51-200	90	15
4	Closer	Thessaloniki	51-200	89	31
5	Solid Havas	n/a	51-200	59	48
6	WHY	n/a	11-50	44	23
7	Radical Communications	Athens	11-50	38	1
8	The Vscope	Athens	11-50	33	22
9	Creace SA	n/a	11-50	32	1
10	BRAVE	n/a	11-50	29	15
11	Vitamin Media 360 Advertising Agency	Athens	11-50	29	9
12	Orange Advertising	Attica	11-50	24	7
13	GIM Agency	Agios Dimitrios	11-50	23	6
14	Unlimited Creativity	Athens	11-50	22	1
15	FCB Gnomi	n/a	51-200	19	16
16	Enzyme	n/a	11-50	18	13
17	Cicero Advertising	Athens	11-50	14	13
18	Cleancut Advertising Agency	Thermi	11-50	13	7
19	Addictad Advertising	Athens	11-50	11	5
20	Blissprojects	n/a	11-50	10	4
21	W2strategy	n/a	11-50	9	7
22	Essencemediacom Greece	Khalandri	11-50	8	7
23	Producta Direct	n/a	11-50	6	4
24	NEW Communication	n/a	11-50	6	1
25	LOS Adgeles	Athens	11-50	3	1

Showing 25 of 266 advertising consulting firms based in Greece

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Advertising consulting firms based in Greece at a glance

As of Aug 28, 2026

1-10Median size (employees)

AthensLargest hub · 80 HQs

96Contacts with mobile numbers

1Emails re-verified in last 30 days

Companies by employee count

1-10

190

11-50

51-200

201-500

Advertising consulting firms by metro

Metro	Companies
Advertising consulting firms in Athens	80
Advertising consulting firms in Thessaloniki	18
Advertising consulting firms in Piraeus	3
Advertising consulting firms in Attica	3
Advertising consulting firms in Thermi	2
Advertising consulting firms in Pefki	2
Advertising consulting firms in Agia Paraskevi	2

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “advertising consulting firms”, with match quality audited by blind human judging, and headquartered in Greece.
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: Contact records re-verify on a rolling cadence; 1 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many advertising consulting firms are there based in Greece?

There are 266 advertising consulting firms headquartered in Greece as of August 2026 (RevenueBase).

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 consulting firms?

Athens leads with 80 headquartered companies, followed by Thessaloniki (18) and Piraeus (3).

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 407 verified decision-maker contacts tracked across these 266 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.