Company lists · Data refreshed September 2026
Top 25 Online advertising agencies based in Canada
RevenueBase identified 4,287 online advertising agencies headquartered in Canada as of September 2026 and tracks 18,753 professional contacts across them, including 4,621 with verified work emails and 1,458 with mobile numbers. Toronto is the largest hub.
This list covers online advertising agencies headquartered in Canada, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, how directly it supports the match, and when it was last checked. Data refreshed September 5, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest online advertising agencies based in Canada
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 267 | ||||
“Webware.ai is a leading provider of ai digital marketing solutions for small businesses looking to establish and grow their online presence.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 2 | 233 | ||||
“If your business isn't generating consistent leads online, the problem usually is your digital presence.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 3 | 166 | ||||
“Running a company is a little like building a plane while flying it.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 4 | 159 | ||||
“We plan, build, and optimize online advertising campaigns that reach millions of people on platforms like Google, Facebook, Instagram, YouTube, Pinterest, Snapchat and more.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 5 | 147 | ||||
“POD Marketing is the parent company of four specialized verticals: Marketing4ECPs (eye care), CITIZEN (senior living marketing), SmileShop Dental Marketing, and Cleinman…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 6 | 105 | ||||
“Bloom is a team of performance-obsessed marketers, and we excel at delivering exceptional results for our clients.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 7 | 102 | ||||
“When you have a question about something and don’t know the answer, then where do you look?” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 8 | Wisdek CorpPartial evidence | 96 | |||
“We develop digital-solutions tailored to the needs of small and medium-sized businesses, from communication strategies and advertising copy to technical implementation and…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 9 | 84 | ||||
“As established leaders in the digital marketing industry, we have been building brands and driving sales with cross-channel, data-driven approach’s for nearly two decades.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 10 | 79 | ||||
“ZGM Modern Marketing Partners is a full-service digitally-focused marketing firm with offices in Calgary and Edmonton and strengths in media, creative, planning and conversion.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 11 | 74 | ||||
“BreezeMaxWeb manages Internet advertising campaigns for local businesses using GEO targeted search to increase our clients' online profile, ensuring maximum local exposure and…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 12 | Maple Tech SpaceIndirect evidence | 74 | |||
“We conceptualize and collaborate with our clients to elevate and grow their business in a constantly evolving Digital Age.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 13 | 73 | ||||
“LoKnow works alongside you, or in the background, to create impactful digital advertising campaigns.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 14 | 69 | ||||
“Whether you are an experienced Internet marketer looking for new ways to reach your audience, a direct marketer exploring how the Internet can be a profitable source of leads or…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 15 | 69 | ||||
“seoplus+ is a digital marketing agency serving clients globally.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 16 | 69 | ||||
“Elite Digital is an award winning digital agency with headquarters in Toronto, Canada.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 17 | 68 | ||||
“We've been promoting and supporting Saskatchewan businesses for over a hundred years, and we’ve evolved alongside them.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 18 | 62 | ||||
“Major Tom is the next iteration of digital marketing, a full-service agency that’s been purpose-built to help organizations thrive in an increasingly complex landscape.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 19 | 56 | ||||
“Reach First is a rapidly growing digital marketing agency focused on result-driven, customized, measurable and creative marketing and web solutions.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 20 | 55 | ||||
“Your problem isn’t getting new customers, it’s building a predictable system to get new customers.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 21 | 53 | ||||
“Measure Marketing is dedicated to developing concrete, quantifiable Demand Generation marketing solutions for business of all sizes and types.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 22 | 53 | ||||
Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 23 | 52 | ||||
“1WEB is a fundraising growth partner for nonprofits and Islamic organizations.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 24 | 51 | ||||
“We are a Digital Marketing Agency specializing in Social Media, Online Marketing and Lead Generation.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 25 | 50 | ||||
“Digitad is a digital performance agency based in Montreal.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
Showing 25 of 4,287 online advertising agencies based in Canada
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Online advertising agencies based in Canada at a glance
As of Sep 5, 2026Companies by employee count
Verified emails by last verification
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among online advertising agencies, so some rows will be adjacent to the category rather than pure plays. The description and evidence rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in Canada whose own description of what they do matches “online advertising agencies”. Matching reads each company's description, not its industry code or its name.
- What we exclude
- Companies whose own description does not clearly place them among online advertising agencies, and records with no verified work email. Companies headquartered outside Canada are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and an evidence rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- 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
- Every listed company carries at least one verified work email, 4,621 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 5, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Online advertising agencies by metro
- Online advertising agencies in Toronto934
- Online advertising agencies in Vancouver360
- Online advertising agencies in Montreal337
- Online advertising agencies in Calgary278
- Online advertising agencies in Mississauga149
- Online advertising agencies in Edmonton137
- Online advertising agencies in Ottawa116
- Online advertising agencies in Winnipeg73
- Online advertising agencies in London66
- Online advertising agencies in Victoria56
- Online advertising agencies in Brampton54
- Online advertising agencies in Kitchener47
- Online advertising agencies in Oakville41
- Online advertising agencies in Quebec41
- Online advertising agencies in Vaughan37
- Online advertising agencies in Halifax36
- Online advertising agencies in Markham36
- Online advertising agencies in Burlington35
- Online advertising agencies in North York35
- Online advertising agencies in Richmond Hill32
- Online advertising agencies in Hamilton31
- Online advertising agencies in Burnaby30
- Online advertising agencies in Kelowna30
- Online advertising agencies in North Vancouver30
- Online advertising agencies in Surrey30
- Online advertising agencies in Windsor28
- Online advertising agencies in Laval27
- Online advertising agencies in Saskatoon27
- Online advertising agencies in Barrie25
Frequently asked
How many online advertising agencies are there based in Canada?
RevenueBase identified 4,287 online advertising agencies headquartered in Canada as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
webware.ai, headquartered in Toronto, tops this list with the largest team on record.
Which city has the most online advertising agencies?
Toronto leads with 934 headquartered companies, followed by Vancouver (360) and Montreal (337).
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 4,621 verified decision-maker contacts tracked across these 4,287 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 5, 2026.
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 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 with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
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