Company lists · Data refreshed November 2026

Top 24 Professional services companies based in Canada

Name: Professional services companies based in Canada
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 6, 2026 2,236 companies tracked

RevenueBase identified 2,236 company matches for professional services companies associated with Canada as of November 2026 and tracks 19,216 professional contacts across them, including 8,223 with verified work emails. Toronto is the largest hub.

This list covers company matches for professional services companies associated with Canada, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 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 RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built

2,236Companies

19,216Contacts tracked

8,223Verified emails

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The 24 largest professional services companies based in Canada

Ranked by team size

Top 24 of 2,236 company matches for professional services companies based in Canada, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	BDO Canada	Exact match	Toronto, ON, CanadaHQ recorded Nov 6, 2026	1,001-5,000	5,079 contacts →
	Exact match “Canada’s Top 100 Employers 2025 I 2024 I 2023 I 2022 BDO Canada LLP is a leading provider of professional services to clients across a variety of sectors and segments.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2	Mallette	Exact match	Québec, QC, CanadaHQ recorded Nov 6, 2026	1,001-5,000	1,286 contacts →
	Exact match “Mallette compte plus de 40 bureaux solidement implantés dans plusieurs régions du Québec et regroupe plus de 1 600 ressources œuvrant dans différents secteurs d’activité.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3	Crowe Mackay LLP	Exact match	Vancouver, BC, CanadaHQ recorded Nov 6, 2026	201-500	422 contacts →
	Exact match “Crowe MacKay LLP is a vibrant team of trusted advisors in eight cities across western and northern Canada.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4	Dmcl Chartered Professional Accountants	Exact match	Vancouver, BC, CanadaHQ recorded Nov 6, 2026	201-500	341 contacts →
	Exact match “DMCL LLP is a full-service accounting firm dedicated to helping you achieve and exceed your business goals, no matter how ambitious.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5	Optimus SBR	Exact match	Toronto, ON, CanadaHQ recorded Nov 6, 2026	201-500	335 contacts →
	Exact match “Optimus SBR is Canada’s largest independent management consulting firm.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6	Hcsc INC	Exact match	Longueuil, QC, CanadaHQ recorded Nov 6, 2026	n/a	181 contacts →
	Exact match “Services-conseils en optimisation de processus d'affaires, comptabilité, financement, démarrage d'entreprise, implantation de logiciel de gestion intégrée et recrutement.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7	Bcgo S.E.N.C.R.L	Exact match	Montréal, QC, CanadaHQ recorded Nov 6, 2026	51-200	167 contacts →
	Exact match “BCGO est un cabinet indépendant d’expertise comptable et de services-conseils aux entrepreneurs.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8	Baass Business Solutions	Exact match	Thornhill, ON, CanadaHQ recorded Nov 6, 2026	51-200	126 contacts →
	Exact match “Established in 1988, and celebrating 35+ years in business, BAASS has been successfully assisting small to medium-sized businesses to improve their business processes, increase…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9	Amyot Gélinas	Exact match	Ste-agathe-des-monts, QC, CanadaHQ recorded Nov 6, 2026	51-200	115 contacts →
	Exact match “Dès la création du cabinet Amyot Gélinas il y a maintenant plus de 30 ans, notre rêve était de grandir avec notre clientèle et de développer avec elle un partenariat fondé sur le…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10	Melo LLP	Exact match	Leamington, ON, CanadaHQ recorded Nov 6, 2026	51-200	104 contacts →
	Exact match “With a deep affinity for progress and bold entrepreneurialism, Melo LLP is an integrated, multidisciplinary team committed to driving business sustainability and growth.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11	Invictus Accounting Group LLP	Exact match	Vancouver, BC, CanadaHQ recorded Nov 6, 2026	51-200	100 contacts →
	Exact match “Located in the heart of Downtown Vancouver, Invictus Accounting Group LLP provides consulting, accounting and tax advisory for publicly listed and privately held companies.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12	The Barrington Consulting Group	Exact match	Halifax, ON, CanadaHQ recorded Nov 6, 2026	51-200	94 contacts →
	Exact match “Since 2004, Barrington Consulting has been trusted by clients to deliver customized solutions that solve their most complex challenges.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13	Groupe Cosior	Exact match	Boucherville, QC, CanadaHQ recorded Nov 6, 2026	51-200	90 contacts →
	Exact match “COSIOR est une firme de services conseils en: En technologies de l’information Impartition de ressources humaines; Gestion de projets; Optimisation des centres serveurs; Centre…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14	Lipton LLP	Exact match	Toronto, ON, CanadaHQ recorded Nov 6, 2026	51-200	80 contacts →
	Exact match “Quality Service.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15	MAC LLP	Exact match	Waterloo, ON, CanadaHQ recorded Nov 6, 2026	51-200	76 contacts →
	Exact match “At MAC LLP, our first priority is always you, your family and your business.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16	Ascend LLP Chartered Professional Accountants	Exact match	Almonte, ON, CanadaHQ recorded Nov 6, 2026	51-200	75 contacts →
	Exact match “Ascend is a professional services firm providing accounting, tax, advisory, and business consulting services to individuals, entrepreneurs, and organizations.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17	Stratford	Exact match	Kanata, ON, CanadaHQ recorded Nov 6, 2026	11-50	68 contacts →
	Exact match “At Stratford, we believe better is possible, and it's our mission to help clients get there with better strategies, better processes, better technology, better intellectual…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18	Adams Miles	Exact match	Toronto, ON, CanadaHQ recorded Nov 6, 2026	51-200	68 contacts →
	Exact match “Adams + Miles delivers accounting, audit, assurance and strategic consulting services to clients across sectors.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19	The AIM Group	Exact match	Ottawa, ON, CanadaHQ recorded Nov 6, 2026	1,001-5,000	68 contacts →
	Exact match “The AIM Group Inc.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20	LES Services Conseils Abna INC	Exact match	Québec, QC, CanadaHQ recorded Nov 6, 2026	51-200	67 contacts →
	Exact match “Forte par son expérience, ABna assure une grande qualité et un professionnalisme sans faille tout en appliquant les meilleures pratiques sur le marché telles que celles d'ISO…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21	Kinessor	Exact match	Montréal, QC, CanadaHQ recorded Nov 6, 2026	51-200	66 contacts →
	Exact match “Née de la volonté de conseiller et de soutenir les organisations dans leurs choix technologiques, Kinessor a développé une offre personnalisée visant à répondre aux différents…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22	Chiasson Gauvreau INC	Exact match	Châteauguay, QC, CanadaHQ recorded Nov 6, 2026	51-200	59 contacts →
	Exact match “Depuis plus de 45 ans, les professionnels de Chiasson Gauvreau Inc.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23	Samson	Exact match	Gatineau, QC, CanadaHQ recorded Nov 6, 2026	11-50	58 contacts →
	Exact match “Samson is a management consulting firm specializing in proven management techniques.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24	Deetken Insight	Exact match	Vancouver, BC, CanadaHQ recorded Nov 6, 2026	11-50	57 contacts →
	Exact match “We are a strategy advisory firm that collaborates with our clients to solve complex and sensitive business challenges.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “professional services companies”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 24 of 2,236 professional services companies based in Canada

See the full list, filter by size, metro and specialty, and access 8,223 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Professional services companies based in Canada at a glance

As of Nov 6, 2026

42.8%Verified-email coverage

8.6Average contacts per company

1-10Median size (employees)

20.9%Largest-city concentration · Toronto

Nov 6, 2026Page data refreshed

Companies by employee count

1-10

1,697

11-50

419

51-200

201-500

501-1,000

1,001-5,000

10001+

Email recency for this list is measured worldwide rather than for Canada, so it is reported there. Company counts and contact totals on this page are exact for Canada, over 2,236 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

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: Company records associated with Canada whose business descriptions match “professional services companies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 8,223 professional contacts with verified work emails across the full matched dataset. 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 November 6, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Professional services companies by metro

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “professional services companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many professional services companies are there based in Canada?

RevenueBase identified 2,236 company matches for professional services companies associated with Canada as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

BDO Canada tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most professional services companies?

Toronto leads with 468 company records, followed by Montreal (222) and Calgary (159).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 8,223 professional contacts with verified work emails tracked across these 2,236 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 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.