Company lists · Data refreshed September 2026

Top 25 Big consulting firms based in Canada

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

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 1,082 companies tracked

RevenueBase identified 1,082 big consulting firms headquartered in Canada as of September 2026 and tracks 7,822 professional contacts across them, including 2,006 with verified work emails. Toronto is the largest hub.

This list covers big consulting firms 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 21, 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 21, 2026 86% judged on-target in blind review

1,082Companies

7,822Contacts tracked

2,006Verified emails

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The 25 largest big consulting firms based in Canada

Ranked by team size

Top 25 of 1,082 big consulting firms based in Canada, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to big consulting firms: 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Lgs, An IBM Company	Partial evidence	Québec, QC, CanadaHQ checked Sep 21, 2026	501-1,000	742 contacts →
	Partial evidence “A consulting firm providing technology solutions and advisory services to both private and public sector organizations.” Source: RevenueBase Database · checked Sep 21, 2026
2	Optimus SBR	Partial evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	201-500	320 contacts →
	Partial evidence “Optimus SBR is Canada’s largest independent management consulting firm.” Source: RevenueBase Database · checked Sep 21, 2026
3	Quartech	Indirect evidence	Vancouver, BC, CanadaHQ checked Sep 21, 2026	201-500	157 contacts →
	Indirect evidence “Quartech is an award-winning business and IT solutions firm delivering outstanding business results since 1984.” Source: RevenueBase Database · checked Sep 21, 2026
4	CSI Group INC	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	1,001-5,000	132 contacts →
	Indirect evidence “A global company with local focus in each geography across the Globe.” Source: RevenueBase Database · checked Sep 21, 2026
5	Oxaro INC	Indirect evidence	Ottawa, ON, CanadaHQ checked Sep 21, 2026	51-200	124 contacts →
	Indirect evidence “Where people, processes, and technology align – that’s the OXARO effect.” Source: RevenueBase Database · checked Sep 21, 2026
6	World Wireless Solutions INC	Partial evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	51-200	123 contacts →
	Partial evidence “World Wireless Solutions is an IT & Telecommunications consulting firm that has evolved into one of the fastest growing premier technologies consulting firms since its foundation…” Source: RevenueBase Database · checked Sep 21, 2026
7	BIG Bang	Strong evidence	Montreal, QC, CanadaHQ checked Sep 21, 2026	51-200	116 contacts →
	Strong evidence “Big Bang is a B Corp Certified, consulting firm that helps organizations optimize and streamline processes through planning digital strategy, deploying business solutions, and…” Source: RevenueBase Database · checked Sep 21, 2026
8	Thoughtstorm	Partial evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	51-200	102 contacts →
	Partial evidence “ThoughtStorm is a global firm providing consulting solutions and services to organizations of all sizes across various industries.” Source: RevenueBase Database · checked Sep 21, 2026
9	Paradigm Consulting Group	Partial evidence	Regina, SK, CanadaHQ checked Sep 21, 2026	51-200	98 contacts →
	Partial evidence “At Paradigm Consulting Group, we partner with organizations to optimize business processes and technology investments, ensuring seamless digital transformation and IT innovation.” Source: RevenueBase Database · checked Sep 21, 2026
10	The Poirier Group	Partial evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	51-200	63 contacts →
	Partial evidence “The Poirier Group (TPG) is a boutique management consulting firm focused on strategy execution, with a specialty in process improvement and operational efficiency.” Source: RevenueBase Database · checked Sep 21, 2026
11	Stratford	Indirect evidence	Kanata, ON, CanadaHQ checked Sep 21, 2026	11-50	63 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 21, 2026
12	Cortex Génie Humain	Indirect evidence	Montreal, QC, CanadaHQ checked Sep 21, 2026	51-200	61 contacts →
	Indirect evidence “Cortex Génie Humain: n.m.” Source: RevenueBase Database · checked Sep 21, 2026
13	Teamwork Canada	Partial evidence	Montréal, QC, CanadaHQ checked Sep 21, 2026	501-1,000	60 contacts →
	Partial evidence “Founded in 2014 by its current VPs, Teamwork Canada (Services & Solutions TWM Canada Inc.) is a consulting company specialized in SAP and new technologies based in Montreal.” Source: RevenueBase Database · checked Sep 21, 2026
14	Deetken Insight	Indirect evidence	Vancouver, BC, CanadaHQ checked Sep 21, 2026	11-50	55 contacts →
	Indirect evidence “We are a strategy advisory firm that collaborates with our clients to solve complex and sensitive business challenges.” Source: RevenueBase Database · checked Sep 21, 2026
15	Maplesoft Group, An SEB Company	Indirect evidence	Ottawa, ON, CanadaHQ checked Sep 21, 2026	51-200	47 contacts →
	Indirect evidence “Since 1996 Maplesoft Group has been helping clients successfully execute their business strategies, create value and achieve measurable results through the innovative and…” Source: RevenueBase Database · checked Sep 21, 2026
16	Cansulta	Indirect evidence	Toronto, CanadaHQ checked Sep 21, 2026	201-500	46 contacts →
	Indirect evidence “Every business deserves a world-class consultant.” Source: RevenueBase Database · checked Sep 21, 2026
17	Elevate Consulting INC	Indirect evidence	Victoria, BC, CanadaHQ checked Sep 21, 2026	11-50	45 contacts →
	Indirect evidence “Who is Elevate and what do we elevate?” Source: RevenueBase Database · checked Sep 21, 2026
18	Think Perfect	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	51-200	45 contacts →
	Indirect evidence “Innovation is at the core of what we do.” Source: RevenueBase Database · checked Sep 21, 2026
19	Ibiska	Partial evidence	Ottawa, ON, CanadaHQ checked Sep 21, 2026	51-200	43 contacts →
	Partial evidence “IBISKA is a dynamic consulting firm with a growing and diversified practice in the IT/IM field.” Source: RevenueBase Database · checked Sep 21, 2026
20	Percy Miller INC	Indirect evidence	Montreal, QC, CanadaHQ checked Sep 21, 2026	11-50	41 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 21, 2026
21	Cascadia Strategy Consulting Partners	Partial evidence	Vancouver, BC, CanadaHQ checked Sep 21, 2026	11-50	40 contacts →
	Partial evidence “Cascadia Partners is a leading boutique management consulting firm that works on tough analytical + technical, as well as people + process challenges to deliver operational…” Source: RevenueBase Database · checked Sep 21, 2026
22	Tantus Solutions Group INC	Partial evidence	Edmonton, AB, CanadaHQ checked Sep 21, 2026	11-50	39 contacts →
	Partial evidence “Tantus Solutions Group Inc is a consulting company made up of specialists that average over 15 years of experience serving clients throughout North America.” Source: RevenueBase Database · checked Sep 21, 2026
23	CC Consultants	Indirect evidence	Rouyn-noranda, QC, CanadaHQ checked Sep 21, 2026	11-50	37 contacts →
	Indirect evidence “CC Consultants est une firme-conseil en gestion qui est enracinée dans son milieu, elle s'engage avec ses clients et ses partenaires dans le développement de leurs petites et…” Source: RevenueBase Database · checked Sep 21, 2026
24	Solutia SDO	Partial evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	51-200	34 contacts →
	Partial evidence “Solutia SDO Limited is an independent management consulting firm which began in 2003 and remains owned and operated by seasoned professionals.” Source: RevenueBase Database · checked Sep 21, 2026
25	Nformal	Indirect evidence	Montreal, QC, CanadaHQ checked Sep 21, 2026	11-50	33 contacts →
	Indirect evidence “At nformal, we believe in honesty, transparency, positive spirit, admitting to mistakes & healthy give-and-takes.” Source: RevenueBase Database · checked Sep 21, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: big consulting firms. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names big consulting firms.
Partial evidence: Its own public description names part of big consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name big consulting firms. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 1,082 big consulting firms based in Canada

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Big consulting firms based in Canada at a glance

As of Sep 21, 2026

25.6%Verified-email coverage

7.2Average contacts per company

1-10Median size (employees)

24.5%Largest-city concentration · Toronto

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

758

11-50

254

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

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 1,082 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 big consulting firms, 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 Canada whose own description of what they do matches “big consulting firms”. 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 big consulting firms), 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 big consulting firms, 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 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, 2,006 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 21, 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.

Big consulting firms by metro

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 big consulting firms, 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 big consulting firms are there based in Canada?

RevenueBase identified 1,082 big consulting firms 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?

Lgs, An IBM Company, headquartered in Quebec, tops this list with the largest team on record.

Which city has the most big consulting firms?

Toronto leads with 265 headquartered companies, followed by Montreal (103) and Calgary (84).

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 2,006 verified decision-maker contacts tracked across these 1,082 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 21, 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.