Company lists · Data verified August 2026

Top 25 Advertising consulting firms based in Ottawa, Canada

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

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 68 companies tracked

There are 68 advertising consulting firms headquartered in Ottawa, Canada (RevenueBase, August 2026). RevenueBase tracks 366 professional contacts across them, including 145 with verified work emails and 41 with mobile numbers. Toronto is the largest hub.

This list covers advertising consulting firms headquartered in Ottawa, 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.

68Companies

366Contacts tracked

145Verified emails

41Mobile numbers

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The 25 largest advertising consulting firms based in Ottawa, Canada

Ranked by team size

Top 25 of 68 advertising consulting firms based in Ottawa, 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	Acart Communications	Ottawa, ON	51-200	42	27
2	Cinnamon Toast	Ottawa, ON	11-50	34	16
3	Accurate Creative	Ottawa	11-50	29	12
4	Syntax Strategic	Ottawa, ON	11-50	23	16
5	Emdash	Ottawa	11-50	12	8
6	Gordongroup Taag	Ottawa, ON	11-50	12	4
7	Sequence Marketing	Ottawa, ON	1-10	12	1
8	Cayenne Creative Canada's Spiciest Brand & Marketing Agency	Ottawa, ON	1-10	10	4
9	20eight Digital	Ottawa, ON	11-50	9	4
10	Duco Media & Technology Solutions	Ottawa, ON	1-10	9	2
11	Inkline	Ottawa, ON	1-10	8	8
12	AD Caffeine Digital Marketing	Ottawa, ON	11-50	8	7
13	Target Insight	Ottawa, ON	1-10	8	1
14	WSI Estrategies	Ottawa, ON	11-50	7	5
15	Extension Marketing INC	Ottawa, ON	11-50	7	3
16	Meerkat Marketing	Ottawa, ON	1-10	6	3
17	Blackiron Agency	Ottawa, ON	11-50	6	1
18	Kolo Agency	Ottawa, ON	1-10	5	1
19	Excentric Agency	Ottawa, ON	1-10	4	3
20	Koch And Kahkonen Communications	Ottawa, ON	1-10	4	2
21	Birchmark	Ottawa, ON	1-10	3	3
22	Marketing Breakthroughs	Ottawa, ON	11-50	3	2
23	Electric Medialand	Ottawa, ON	1-10	3	1
24	Mayet Strategic Consulting	Ottawa, ON	1-10	2	1
25	KCW Consulting	Ottawa, ON	1-10	2	1

Showing 25 of 68 advertising consulting firms based in Ottawa, Canada

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Advertising consulting firms based in Ottawa, Canada at a glance

As of Aug 28, 2026

1-10Median size (employees)

TorontoLargest hub · 631 HQs

41Contacts with mobile numbers

0Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

51-200

Advertising consulting firms by metro in Canada

Metro	Companies
Advertising consulting firms in Toronto	631
Advertising consulting firms in Vancouver	200
Advertising consulting firms in Montreal	200
Advertising consulting firms in Calgary	160
Advertising consulting firms in Edmonton	79
Advertising consulting firms in Ottawa	68
Advertising consulting firms in Mississauga	55
Advertising consulting firms in Quebec	43

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 Ottawa, 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; 0 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 Ottawa, Canada?

There are 68 advertising consulting firms headquartered in Ottawa, Canada as of August 2026 (RevenueBase).

What is the largest company on this list?

Acart Communications, headquartered in Ottawa, tops this list with the largest team on record.

Which city has the most advertising consulting firms?

Toronto leads with 631 headquartered companies, followed by Vancouver (200) and Montreal (200).

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 145 verified decision-maker contacts tracked across these 68 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.