Company lists · Data verified August 2026

Top 25 Advertising agencies based in Canada

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

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 3,151 companies tracked

There are 3,151 advertising agencies headquartered in Canada (RevenueBase, August 2026). RevenueBase tracks 29,097 professional contacts across them, including 8,099 with verified work emails and 3,349 with mobile numbers. Toronto is the largest hub.

This list covers advertising agencies headquartered in 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.

3,151Companies

29,097Contacts tracked

8,099Verified emails

3,349Mobile numbers

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The 25 largest advertising agencies based in Canada

Ranked by team size

Top 25 of 3,151 advertising agencies based in 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	OTHER	Toronto, ON	n/a	2,648	53
2	Momentum Worldwide	Toronto, ON	1,001-5,000	1,350	422
3	SJC	Toronto, ON	501-1,000	491	208
4	Lg2	Toronto, ON	201-500	455	356
5	Mckinney	n/a	201-500	327	151
6	Diamond	Toronto, ON	51-200	247	86
7	Cossette Media	Vancouver, BC	501-1,000	241	25
8	Media Experts	Montreal, QC	51-200	218	105
9	Zulu Alpha Kilo	Vancouver, BC	51-200	176	121
10	OMD Canada	Vancouver, BC	10001+	172	93
11	Dingus & Zazzy	Leduc, AB	51-200	166	26
12	Havas CX Canada	Toronto, ON	51-200	158	45
13	Battery	Toronto, ON	51-200	157	26
14	Tank Worldwide	Toronto, ON	201-500	156	59
15	Community Agency	Toronto, ON	51-200	127	61
16	Arrivals Departures	Halifax, NS	51-200	113	45
17	Point2web	Toronto	51-200	111	13
18	M&h	Toronto, ON	51-200	108	49
19	BRAD	Quebec, QC	51-200	106	1
20	Essencemediacom Canada	Montreal, QC	201-500	100	36
21	Bensimon Byrne	Toronto, ON	51-200	99	48
22	Bleublancrouge	Montreal, QC	51-200	92	47
23	Cartier	Montreal, QC	51-200	86	31
24	NO Fixed Address INC	Toronto, ON	51-200	85	34
25	Ogilvy Canada	Montreal, QC	201-500	78	55

Showing 25 of 3,151 advertising agencies based in Canada

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Advertising agencies based in Canada at a glance

As of Aug 28, 2026

1-10Median size (employees)

TorontoLargest hub · 850 HQs

3,349Contacts with mobile numbers

49Emails re-verified in last 30 days

Companies by employee count

1-10

2,242

11-50

780

51-200

201-500

501-1,000

1,001-5,000

10001+

Advertising agencies by metro

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 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; 49 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 Canada?

There are 3,151 advertising agencies headquartered in Canada as of August 2026 (RevenueBase).

What is the largest company on this list?

OTHER, headquartered in Toronto, 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 8,099 verified decision-maker contacts tracked across these 3,151 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.