Company lists · Data refreshed September 2026

Top 25 Executive branch marketing consultants based in Ottawa, Canada

RevenueBase identified 62 executive branch marketing consultants headquartered in Ottawa, Canada as of September 2026 and tracks 430 professional contacts across them, including 208 with verified work emails. Across Canada, Toronto is the largest hub for this category (273 companies); Ottawa has 62.

This list covers executive branch marketing consultants 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 28, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 RevenueBase Smart Search rating on every row Refreshed Sep 28, 2026 86% judged on-target in blind review
62Companies
430Contacts tracked
208Verified emails
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The 25 largest executive branch marketing consultants based in Ottawa, Canada

Ranked by team size
Top 25 of 62 executive branch marketing consultants based in Ottawa, Canada, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to executive branch marketing consultants: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceOttawa, ON, CanadaHQ checked Sep 28, 202651-20084 contacts →

Indirect evidence

“Founded in 1989 and independently owned by our principals, Earnscliffe operates from offices in Ottawa-Gatineau, Toronto and Vancouver.”

Source: RevenueBase Database · checked Sep 28, 2026
2Partial evidenceOttawa, ON, CanadaHQ checked Sep 28, 202651-20042 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 28, 2026
3Partial evidenceOttawa, ON, CanadaHQ checked Sep 28, 20261-1024 contacts →

Partial evidence

“Sandstone Group Sandstone Group, based in Ottawa, specializes in providing strategic advice to corporate executives in matters of public affairs, government relations, crisis…”

Source: RevenueBase Database · checked Sep 28, 2026
4Indirect evidenceOttawa, ON, CanadaHQ checked Sep 28, 202611-5019 contacts →

Indirect evidence

“At 49 Solutions we consistently deliver top quality consulting services, supporting both business and technology.”

Source: RevenueBase Database · checked Sep 28, 2026
5Partial evidenceOttawa, ON, CanadaHQ checked Sep 28, 202611-5018 contacts →

Partial evidence

“Bluesky Strategy Group delivers public affairs, strategic communications, government relations, and media relations advice and execution.”

Source: RevenueBase Database · checked Sep 28, 2026
6Indirect evidenceOttawa, ON, CanadaHQ checked Sep 28, 202611-5018 contacts →

Indirect evidence

“Stiff is a strategic communications agency.”

Source: RevenueBase Database · checked Sep 28, 2026
7Partial evidenceOttawa, CanadaHQ checked Sep 28, 202611-5012 contacts →

Partial evidence

“Strategy Branding & Design Campaigns & Content Media Relations Digital Advertising Crisis Communications Social Media Training & Workshops”

Source: RevenueBase Database · checked Sep 28, 2026
8Partial evidenceOttawa, ON, CanadaHQ checked Sep 28, 202611-5012 contacts →

Partial evidence

“After 35 years operating independently as one of Ottawa’s oldest and most established marketing and design firms, gordongroup is pleased to announce we are joining forces through…”

Source: RevenueBase Database · checked Sep 28, 2026
9Indirect evidenceOttawa, ON, CanadaHQ checked Sep 28, 202611-5011 contacts →

Indirect evidence

“Headquartered in our nation’s capital, Arctech Accelerate is a Canadian management consulting and lobbying firm specializing in helping small and mid-sized businesses navigate…”

Source: RevenueBase Database · checked Sep 28, 2026
10Indirect evidenceOttawa, ON, CanadaHQ checked Sep 28, 202611-5010 contacts →

Indirect evidence

“The Halifax Group is a multi-service consulting company.”

Source: RevenueBase Database · checked Sep 28, 2026
11Strong evidenceOttawa, ON, CanadaHQ checked Sep 28, 20261-108 contacts →

Strong evidence

“Irene Crosby, Principal of Target Insight, is an accomplished marketing communications consultant located in Ottawa, ON.”

Source: RevenueBase Database · checked Sep 28, 2026
12Partial evidenceOttawa, ON, CanadaHQ checked Sep 28, 20261-106 contacts →

Partial evidence

“Meerkat Marketing is a marketing + creative boutique located in Ottawa, Ontario.”

Source: RevenueBase Database · checked Sep 28, 2026
13Indirect evidenceOttawa, ON, CanadaHQ checked Sep 28, 202611-505 contacts →

Indirect evidence

“Located in the heart of Canada's capital just minutes away from Parliament Hill, Constituent Manager Solutions provides advisory, communications, digital, data management and…”

Source: RevenueBase Database · checked Sep 28, 2026
14Partial evidenceOttawa, ON, CanadaHQ checked Sep 28, 20261-105 contacts →

Partial evidence

“We are a team of Marketing and Communications specialists from Ukraine located in Ottawa, Canada.”

Source: RevenueBase Database · checked Sep 28, 2026
15Partial evidenceOttawa, ON, CanadaHQ checked Sep 28, 20261-104 contacts →

Partial evidence

“Founded in 2005 and proudly Canadian-owned, the Centre of Excellence for Public Sector Marketing (CEPSM) is a specialized consulting and training organization devoted to helping…”

Source: RevenueBase Database · checked Sep 28, 2026
16Indirect evidenceOttawa, ON, CanadaHQ checked Sep 28, 20261-104 contacts →

Indirect evidence

“We’re an independent consulting firm that provides expert, affordable public and government relations services including: Advocacy Grants and Funding Support Policy Communications…”

Source: RevenueBase Database · checked Sep 28, 2026
17Indirect evidenceOttawa, CanadaHQ checked Sep 28, 20261-104 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 28, 2026
18Indirect evidenceOttawa, ON, CanadaHQ checked Sep 28, 20261-104 contacts →

Indirect evidence

“Our communications agency offers a variety of services; from creating custom strategic communication plans tailored to meet your business goals, to implementation and social media…”

Source: RevenueBase Database · checked Sep 28, 2026
19Partial evidenceOttawa, ON, CanadaHQ checked Sep 28, 20261-103 contacts →

Partial evidence

“Birchmark is a Managed Marketing Services and Business Consulting company located in Ottawa, Ontario.”

Source: RevenueBase Database · checked Sep 28, 2026
20Indirect evidenceOttawa, ON, CanadaHQ checked Sep 28, 20261-103 contacts →

Indirect evidence

“Capital Park offers its clients a full range of management consulting services from strategic planning to project management support and evaluation of program results.”

Source: RevenueBase Database · checked Sep 28, 2026
21Indirect evidenceOttawa, CanadaHQ checked Sep 28, 20261-102 contacts →

Indirect evidence

“is a management consulting firm that has served the public sector exclusively since 1996.”

Source: RevenueBase Database · checked Sep 28, 2026
22Indirect evidenceOttawa, ON, CanadaHQ checked Sep 28, 20261-102 contacts →

Indirect evidence

“Maybe you’re blogging, doing the odd video and making sure you post all the important things to social feeds.”

Source: RevenueBase Database · checked Sep 28, 2026
23Indirect evidenceOttawa, ON, CanadaHQ checked Sep 28, 20261-102 contacts →

Indirect evidence

“Lighthouse Public Affairs is a boutique firms located in Canada's capital.”

Source: RevenueBase Database · checked Sep 28, 2026
24Partial evidenceOttawa, ON, CanadaHQ checked Sep 28, 20261-101 contacts →

Partial evidence

“Marketing and communications company providing private sector and government clients with tools, structure, financing, and strategy to function and communicate more effectively…”

Source: RevenueBase Database · checked Sep 28, 2026
25Indirect evidenceOttawa, ON, CanadaHQ checked Sep 28, 20261-101 contacts →

Indirect evidence

“RIDDICK Investments and Consulting is an Ottawa-based consulting firm that has been delivering solutions to clients since 2019.”

Source: RevenueBase Database · checked Sep 28, 2026

Showing 25 of 62 executive branch marketing consultants based in Ottawa, Canada

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Executive branch marketing consultants based in Ottawa, Canada at a glance

As of Sep 28, 2026
48.4%Verified-email coverage
6.9Average contacts per company
1-10Median size (employees)
Sep 28, 2026Page data refreshed

Companies by employee count

1-10
46
11-50
14
51-200
2

Email recency for this list is measured across the whole Canada list rather than for Ottawa, so it is reported there. Company counts and contact totals on this page are exact for Ottawa, over 62 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 executive branch marketing consultants, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search 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 Smart Search, 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 “executive branch marketing consultants”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search
RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names executive branch marketing consultants), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude
Companies whose own description does not clearly place them among executive branch marketing consultants, 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 its RevenueBase Smart Search 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, 208 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 28, 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.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names executive branch marketing consultants, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many executive branch marketing consultants are there based in Ottawa, Canada?

RevenueBase identified 62 executive branch marketing consultants 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?

Earnscliffe Strategies, headquartered in Ottawa, tops this list with the largest team on record.

Which city in Canada has the most executive branch marketing consultants?

Toronto leads Canada with 273 headquartered companies, followed by Montreal (99) and Vancouver (92). Ottawa has 62.

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 208 verified decision-maker contacts tracked across these 62 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 28, 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 Smart Search, 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.