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Company lists · Data refreshed September 2026

Top 25 Online advertising agencies based in Ottawa, Canada

Compiled by the RevenueBase Data Team Data refreshed Sep 5, 2026 116 companies tracked

RevenueBase identified 116 online advertising agencies headquartered in Ottawa, Canada as of September 2026 and tracks 502 professional contacts across them, including 134 with verified work emails. Toronto is the largest hub.

This list covers online advertising agencies headquartered in Ottawa, 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.

How to read this list HQ checked on every row Match evidence on every row Refreshed Sep 5, 2026 86% judged on-target in blind review
116Companies
502Contacts tracked
134Verified emails
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The 25 largest online advertising agencies based in Ottawa, Canada

Ranked by team size
Top 25 of 116 online advertising agencies based in Ottawa, Canada, ranked by team size, largest first. Data refreshed Sep 5, 2026. Evidence rates how directly each company's own description names online advertising agencies: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#CompanyHeadquartersEmployeesContacts
1
SeoplusIndirect evidence
Ottawa, ON, CanadaHQ checked Sep 5, 202651-20069

“seoplus+ is a digital marketing agency serving clients globally.”

Source: company website · checked Sep 5, 2026
2
Acart CommunicationsIndirect evidence
Ottawa, ON, CanadaHQ checked Sep 5, 202651-20042

“We’re a full-service agency helping transform brands through our expertise in strategy, media, and effective creative.”

Source: company website · checked Sep 5, 2026
3
DigitaliseIndirect evidence
Ottawa, ON, CanadaHQ checked Sep 5, 202611-5025

“Digitalise is a full service digital media agency focused on delivering end-to-end digital media and marketing solutions to brands and companies across the globe.”

Source: company website · checked Sep 5, 2026
4
digitera.interactivePartial evidence
Ottawa, ON, CanadaHQ checked Sep 5, 20261-1014

“Digitera, cutting through the clutter of online marketing with the biggest factor in the tech world.people!”

Source: company website · checked Sep 5, 2026
5
Skyfall BlueIndirect evidence
Ottawa, CanadaHQ checked Sep 5, 202651-20011

“Skyfall Blue is a full service, multi-lingual and award-winning Digital Marketing Agency in Ottawa with expertise in website design and development, brand development, social…”

Source: company website · checked Sep 5, 2026
6
mymarketing.ioIndirect evidence
Ottawa, ON, CanadaHQ checked Sep 5, 202611-509

“myMarketing is an Ottawa based digital marketing agency founded by Mathew Paquet.”

Source: company website · checked Sep 5, 2026
7
LGG MediaIndirect evidence
Ottawa, ON, CanadaHQ checked Sep 5, 202611-509

“LGG Media is a performance marketing and attribution agency based in Ottawa, Canada.”

Source: company website · checked Sep 5, 2026
8
20eight DigitalIndirect evidence
Ottawa, ON, CanadaHQ checked Sep 5, 202611-509

“What do we do?”

Source: company website · checked Sep 5, 2026
9
NIOMAIndirect evidence
Ottawa, ON, CanadaHQ checked Sep 5, 20261-109

“Nioma is a Canadian ecommerce marketing agency and certified Shopify Partner.”

Source: company website · checked Sep 5, 2026
10
InklineIndirect evidence
Ottawa, ON, CanadaHQ checked Sep 5, 20261-108

“We are a full service agency providing our clients a wide range of creative and digital services, all focused on increasing the efficiency and effectiveness of their businesses to…”

Source: company website · checked Sep 5, 2026
11
AD Caffeine Digital MarketingPartial evidence
Ottawa, ON, CanadaHQ checked Sep 5, 202611-508

“Ad Caffeine has mastered the art of highly targeted online campaigns.”

Source: company website · checked Sep 5, 2026
12
WSI EstrategiesIndirect evidence
Ottawa, ON, CanadaHQ checked Sep 5, 202611-508

“WSI eStrategies Ottawa and Extension Marketing have joined forces to deliver strategy-first, digitally-powered growth for today’s most ambitious brands.”

Source: company website · checked Sep 5, 2026
13
Duco Media & Technology SolutionsIndirect evidence
Ottawa, ON, CanadaHQ checked Sep 5, 20261-108

“Meet the Duco Media & Technology Solutions team: Ottawa's first full-service marketing agency (est.”

Source: company website · checked Sep 5, 2026
14
Extension Marketing INCIndirect evidence
Ottawa, ON, CanadaHQ checked Sep 5, 202611-507

“Extension Marketing and WSI eStrategies Ottawa have joined forces to deliver strategy-first, digitally-powered growth for today’s most ambitious brands.”

Source: company website · checked Sep 5, 2026
15
Vertex Marketing AgencyIndirect evidence
Ottawa, ON, CanadaHQ checked Sep 5, 20261-106

“Vertex Marketing is a digital marketing agency in Ottawa that helps businesses grow by leveraging social media marketing, search engine optimization, email marketing, PPC…”

Source: company website · checked Sep 5, 2026
16
Nexus DigitalIndirect evidence
Ottawa, ON, CanadaHQ checked Sep 5, 202611-505

“Based in Ottawa, Canada and providing services to local, national and global brands.”

Source: company website · checked Sep 5, 2026
17
LRO SolutionsIndirect evidence
Ottawa, ON, CanadaHQ checked Sep 5, 20261-105

“LRO Solutions is a full-service marketing agency for organizations who value the benefits brought by exemplary marketing disciplines while maintaining a flexible, price conscious…”

Source: company website · checked Sep 5, 2026
18
Excentric AgencyIndirect evidence
Ottawa, ON, CanadaHQ checked Sep 5, 202611-504

“YOUR CREATIVE PARTNER Excentric* brings award winning, senior-level digital marketing services to Ottawa, Toronto, across Canada, the US and UK to help companies get to the next…”

Source: company website · checked Sep 5, 2026
19
EncipherIndirect evidence
Ottawa, CanadaHQ checked Sep 5, 20261-104

“Web design, paid ads, consulting.”

Source: company website · checked Sep 5, 2026
20
Socl MediaIndirect evidence
Ottawa, ON, CanadaHQ checked Sep 5, 20261-104

“As a Canadian digital studio in a sea of both sharks and tadpoles, we pride ourselves on our unorthodox ideas and our ability to stay true to your brand.”

Source: company website · checked Sep 5, 2026
21
Seed Your BusinessIndirect evidence
Ottawa, ON, CanadaHQ checked Sep 5, 202611-503

“Businesses do not grow on their own.”

Source: company website · checked Sep 5, 2026
22
WebsuitableIndirect evidence
Ottawa, ON, CanadaHQ checked Sep 5, 202611-503

“Everything we do at WebSuitable is aimed at helping our clients maximize the number of sales & leads they generate through Web Design, SEO, Facebook Ads & Paid Ads to help grow…”

Source: company website · checked Sep 5, 2026
23
Marketing BreakthroughsIndirect evidence
Ottawa, ON, CanadaHQ checked Sep 5, 202611-503

“Marketing Breakthroughs is Ottawa's leading digital marketing and branding company.”

Source: company website · checked Sep 5, 2026
24
Adhouse Digital AdvertisingStrong evidence
Ottawa, ON, CanadaHQ checked Sep 5, 20261-103

“AdHouse provides online media buying & advertising services to brands in the e-commerce and lead gen space, irrespectively of their actual physical location.”

Source: company website · checked Sep 5, 2026
25
Pondstone Digital MarketingIndirect evidence
Ottawa, ON, CanadaHQ checked Sep 5, 20261-103

“Purveyors of results-driven digital marketing services.”

Source: company website · checked Sep 5, 2026

Showing 25 of 116 online advertising agencies based in Ottawa, Canada

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 134 reachable decision-makers.

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See all 116 companies

Online advertising agencies based in Ottawa, Canada at a glance

As of Sep 5, 2026
1-10Median size (employees)
TorontoLargest hub · 934 HQs
Contacts with mobile numbers
Sep 5, 2026Data refreshed

Companies by employee count

1-10
92
11-50
19
51-200
5

Email recency for this list is measured across the whole Canada list rather than this city, so it is reported there. Company counts and contact totals on this page are exact for Ottawa, over 116 companies.

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 Ottawa, 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 Ottawa 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, 134 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 in Canada

Frequently asked

How many online advertising agencies are there based in Ottawa, Canada?

RevenueBase identified 116 online advertising agencies headquartered in Ottawa, 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?

Seoplus, headquartered in Ottawa, 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 134 verified decision-maker contacts tracked across these 116 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.

Ready to reach these companies? Verified emails and direct dials for all 116 online advertising agencies based in Ottawa, Canada. Start with a free account, no credit card.

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Related lists

Browse: Companies home · Online advertising agencies in Canada · All Canada lists · All Online advertising agencies lists · New lists

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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