Company lists · Data verified August 2026

Top 25 Advertising agencies based in Oslo, Norway

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

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 148 companies tracked

There are 148 advertising agencies headquartered in Oslo, Norway (RevenueBase, August 2026). RevenueBase tracks 2,183 professional contacts across them, including 540 with verified work emails and 148 with mobile numbers. Oslo is the largest hub.

This list covers advertising agencies headquartered in Oslo, Norway, 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.

148Companies

2,183Contacts tracked

540Verified emails

148Mobile numbers

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The 25 largest advertising agencies based in Oslo, Norway

Ranked by team size

Top 25 of 148 advertising agencies based in Oslo, Norway, 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	TRY APT	Oslo	51-200	407	11
2	WAL	Oslo	51-200	124	58
3	Concept Communication AS	Oslo	51-200	104	18
4	BLOOM	Oslo	51-200	78	21
5	OMD Norway	Oslo	11-50	60	43
6	BACON	Oslo	11-50	55	7
7	The Oslo Company	Oslo	11-50	54	17
8	POL	Oslo	11-50	45	9
9	Anorak NOA	Oslo	11-50	38	25
10	Involve	Oslo	11-50	32	25
11	ATYP	Oslo	11-50	26	18
12	Spoon Norge PPP	Oslo	11-50	26	16
13	ITEO	Oslo	11-50	26	14
14	Nova Vista AS	Oslo	11-50	24	2
15	PHD Norge	Oslo	11-50	21	13
16	SMEH	Oslo	11-50	21	5
17	Essencemediacom Norway	Oslo	51-200	20	10
18	MMM Agency	Oslo	11-50	17	12
19	RE Media AS	Oslo	11-50	17	9
20	Snakk Kommunikasjon AS	Oslo	11-50	16	8
21	Amfi Kreativ AS	Oslo	11-50	16	3
22	NXT Oslo Reklamebyrå	Oslo	11-50	13	8
23	MOOD	Oslo	11-50	12	7
24	A S Tante Randi	Oslo	11-50	11	7
25	MVH AS	Oslo	11-50	10	7

Showing 25 of 148 advertising agencies based in Oslo, Norway

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Advertising agencies based in Oslo, Norway at a glance

As of Aug 28, 2026

1-10Median size (employees)

OsloLargest hub · 148 HQs

148Contacts with mobile numbers

3Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

51-200

201-500

5,001-10,000

Advertising agencies by metro in Norway

Metro	Companies
Advertising agencies in Oslo	148
Advertising agencies in Trondheim	15
Advertising agencies in Stavanger	12
Advertising agencies in Bergen	10
Advertising agencies in Kristiansand	8
Advertising agencies in Fredrikstad Viken	5
Advertising agencies in Sandnes	5

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 Oslo, Norway.
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; 3 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 Oslo, Norway?

There are 148 advertising agencies headquartered in Oslo, Norway as of August 2026 (RevenueBase).

What is the largest company on this list?

TRY APT, headquartered in Oslo, tops this list with the largest team on record.

Which city has the most advertising agencies?

Oslo leads with 148 headquartered companies, followed by Trondheim (15) and Stavanger (12).

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 540 verified decision-maker contacts tracked across these 148 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.