Company lists · Data verified August 2026

Top 25 Advertising agencies based in Montreal, Canada

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

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 323 companies tracked

There are 323 advertising agencies headquartered in Montreal, Canada (RevenueBase, August 2026). RevenueBase tracks 3,087 professional contacts across them, including 1,039 with verified work emails and 271 with mobile numbers. Toronto is the largest hub.

This list covers advertising agencies headquartered in Montreal, Canada, 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.

323Companies

3,087Contacts tracked

1,039Verified emails

271Mobile numbers

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The 25 largest advertising agencies based in Montreal, Canada

Ranked by team size

Top 25 of 323 advertising agencies based in Montreal, Canada, 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	Media Experts	Montreal, QC	51-200	218	105
2	Innocean Canada	Montreal, QC	51-200	175	119
3	Essencemediacom Canada	Montreal, QC	201-500	100	36
4	Bleublancrouge	Montreal, QC	51-200	92	47
5	Cartier	Montreal, QC	51-200	86	31
6	Ogilvy Canada	Montreal, QC	201-500	78	55
7	Caserne	Montreal, QC	11-50	55	10
8	Contentjet	Montreal	51-200	54	5
9	Donernorth	Montreal, QC	51-200	51	42
10	Tam-Tam Tbwa	Montreal, QC	11-50	50	30
11	Spark Foundry Canada	Montreal, QC	201-500	46	27
12	Rouge Marketing & Communications	Montreal, QC	11-50	45	30
13	Orkestra	Montreal, QC	11-50	44	13
14	Espace M	Montreal, QC	11-50	42	31
15	HÖSKI	Montreal, QC	11-50	30	9
16	Inexxus	Montreal	11-50	27	4
17	Karrat Management	Montreal, QC	11-50	27	1
18	Humanise Collective	Montreal, QC	201-500	25	14
19	LES Enfants	Montreal, QC	11-50	23	9
20	Speed-Xm	Montreal, QC	11-50	22	5
21	Growth Hacker	Montreal, QC	11-50	21	2
22	Fisika	Montreal, QC	11-50	20	11
23	Capital-Image	Montreal, QC	11-50	20	10
24	Annexe	Montreal, QC	11-50	20	8
25	Chivalry	Montreal, QC	11-50	19	10

Showing 25 of 323 advertising agencies based in Montreal, Canada

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 1,039 reachable decision-makers.

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Advertising agencies based in Montreal, Canada at a glance

As of Aug 28, 2026

1-10Median size (employees)

TorontoLargest hub · 850 HQs

271Contacts with mobile numbers

4Emails re-verified in last 30 days

Companies by employee count

1-10

220

11-50

51-200

201-500

10001+

Advertising agencies by metro in Canada

Metro	Companies
Advertising agencies in Toronto	850
Advertising agencies in Montreal	323
Advertising agencies in Vancouver	256
Advertising agencies in Calgary	173
Advertising agencies in Edmonton	89
Advertising agencies in Ottawa	78
Advertising agencies in Mississauga	59
Advertising agencies in Quebec	49

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 Montreal, Canada.
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; 4 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 Montreal, Canada?

There are 323 advertising agencies headquartered in Montreal, Canada as of August 2026 (RevenueBase).

What is the largest company on this list?

Media Experts, headquartered in Montreal, tops this list with the largest team on record.

Which city has the most advertising agencies?

Toronto leads with 850 headquartered companies, followed by Montreal (323) and Vancouver (256).

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 1,039 verified decision-maker contacts tracked across these 323 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.