Company lists · Data verified August 2026

Top 25 Advertising agencies based in Helsinki, Finland

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

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 151 companies tracked

There are 151 advertising agencies headquartered in Helsinki, Finland (RevenueBase, August 2026). RevenueBase tracks 2,153 professional contacts across them, including 784 with verified work emails and 119 with mobile numbers. Helsinki is the largest hub.

This list covers advertising agencies headquartered in Helsinki, Finland, 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.

151Companies

2,153Contacts tracked

784Verified emails

119Mobile numbers

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The 25 largest advertising agencies based in Helsinki, Finland

Ranked by team size

Top 25 of 151 advertising agencies based in Helsinki, Finland, 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	SEK	Helsinki	51-200	308	77
2	VALVE	Helsinki	51-200	255	62
3	Hasan & Partners	Helsinki	11-50	147	13
4	NITRO	Helsinki	51-200	107	36
5	Tbwa Helsinki	Helsinki	51-200	106	74
6	Dentsu Finland	Helsinki	201-500	92	70
7	Sanoma Media B2B	Helsinki	1,001-5,000	81	38
8	Aste Helsinki	Helsinki	51-200	77	74
9	Fridays	Helsinki	n/a	74	1
10	OMD Finland	Helsinki	11-50	55	35
11	United Imaginations FI	Helsinki	11-50	37	29
12	KUUKI	Helsinki	11-50	29	24
13	Luova Työmaa	Helsinki	11-50	27	9
14	Mainostoimisto M1	Helsinki	11-50	26	18
15	HEKU	Helsinki	51-200	26	17
16	Indieplace OY	Helsinki	11-50	24	11
17	Lataamo Group LTD	Helsinki	11-50	20	14
18	KUUBI	Helsinki	11-50	19	14
19	Republic Agency	Helsinki	11-50	18	13
20	SMOY	Helsinki	11-50	15	6
21	Diamonds Helsinki	Helsinki	1-10	14	10
22	Nørr3	Helsinki	11-50	13	12
23	Source Creative	Helsinki	11-50	12	8
24	Checkpoint Production OY	Helsinki	11-50	11	9
25	Marvelous Nordic	Helsinki	11-50	11	6

Showing 25 of 151 advertising agencies based in Helsinki, Finland

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Advertising agencies based in Helsinki, Finland at a glance

As of Aug 28, 2026

1-10Median size (employees)

HelsinkiLargest hub · 151 HQs

119Contacts with mobile numbers

5Emails re-verified in last 30 days

Companies by employee count

1-10

102

11-50

51-200

201-500

1,001-5,000

10001+

Advertising agencies by metro in Finland

Metro	Companies
Advertising agencies in Helsinki	151
Advertising agencies in Tampere	25
Advertising agencies in Turku	17
Advertising agencies in Lahti	12
Advertising agencies in Espoo	10
Advertising agencies in Vantaa	6
Advertising agencies in Oulu	6

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 agencies”, with match quality audited by blind human judging, and headquartered in Helsinki, Finland.
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; 5 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 agencies are there based in Helsinki, Finland?

There are 151 advertising agencies headquartered in Helsinki, Finland as of August 2026 (RevenueBase).

What is the largest company on this list?

SEK, headquartered in Helsinki, tops this list with the largest team on record.

Which city has the most advertising agencies?

Helsinki leads with 151 headquartered companies, followed by Tampere (25) and Turku (17).

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 784 verified decision-maker contacts tracked across these 151 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.