Company lists · Data refreshed September 2026

Top 21 International law firms based in Ottawa, Canada

RevenueBase identified 38 company matches for international law firms associated with Ottawa, Canada as of September 2026 and tracks 2,162 professional contacts across them, including 1,481 with verified work emails. Across Canada, Toronto is the largest hub for this category (210 companies); Ottawa has 38.

This list covers company matches for international law firms associated with Ottawa, 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 September 4, 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 Sep 4, 2026 How this list was built
38Companies
2,162Contacts tracked
1,481Verified emails
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The 21 largest international law firms based in Ottawa, Canada

Ranked by team size
Top 21 of 38 company matches for international law firms based in Ottawa, Canada, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 4, 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchOttawa, ON, CanadaHQ recorded Sep 4, 2026501-1,000517 contacts →

Exact match

“Smart & Biggar is widely recognized as Canada’s leading firm for intellectual property, and with over 180 lawyers, patent agents and trademark agents.”

Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
2Exact matchOttawa, ON, CanadaHQ recorded Sep 4, 202651-20098 contacts →

Exact match

“Every client.”

Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
3Exact matchOttawa, ON, CanadaHQ recorded Sep 4, 202651-20080 contacts →

Exact match

“Founded in Ottawa in 1971, Perley-Robertson, Hill & McDougall has provided effective, innovative legal solutions to Canadian and international clients on a broad range of business…”

Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
4Exact matchOttawa, ON, CanadaHQ recorded Sep 4, 202651-20056 contacts →

Exact match

“Sicotte Guilbault focuses on providing clients with a wide range of specialized corporate, commercial, municipal, employment, real estate, litigation & alternate dispute…”

Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
5Exact matchOttawa, ON, CanadaHQ recorded Sep 4, 202651-20051 contacts →

Exact match

“At Low Murchison Radnoff LLP we provide a full range of legal services to our clients.”

Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
6Exact matchOttawa, ON, CanadaHQ recorded Sep 4, 202611-5022 contacts →

Exact match

“VINCENT DAGENAIS GIBSON is one of Ottawa's leading bilingual law firms, serving the National Capital Region and surrounding areas since 1897.”

Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
7Exact matchOttawa, ON, CanadaHQ recorded Sep 4, 202611-5011 contacts →

Exact match

“First, we work with you.”

Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
8Exact matchOttawa, ON, CanadaHQ recorded Sep 4, 202611-508 contacts →

Exact match

“Tereposky & DeRose offers preeminent expertise in international trade and investment law, government procurement, and related regulatory areas.”

Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
9Exact matchOttawa, ON, CanadaHQ recorded Sep 4, 20261-108 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
10Exact matchOttawa, ON, CanadaHQ recorded Sep 4, 202611-508 contacts →

Exact match

“Welcome to Simard & Associates YOUR RIGHTS.”

Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
11Exact matchOttawa, ON, CanadaHQ recorded Sep 4, 20261-107 contacts →

Exact match

“We deliver expert advice and assistance to our clients, throughout all our practice areas, with our unique mixture of common sense and experience.”

Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
12Exact matchOttawa, ON, CanadaHQ recorded Sep 4, 20261-107 contacts →

Exact match

“We are dedicated to providing timely and effective legal advice to its small-to-medium sized entrepreneurial clients.”

Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
13Exact matchOttawa, ON, CanadaHQ recorded Sep 4, 20261-105 contacts →

Exact match

“HazloLaw - Business Lawyers | Avocats d'affaires is a leading Boutique Business Law Firm headquartered in Ottawa, Ontario.”

Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
14Exact matchOttawa, ON, CanadaHQ recorded Sep 4, 20261-105 contacts →

Exact match

“Our team of professionals at Habib & Associates believes that good communication is the foundation of a solid working relationship with clients.”

Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
15Exact matchOttawa, ON, CanadaHQ recorded Sep 4, 20261-104 contacts →

Exact match

“At Sevigny Dupuis, we recognize that workplace disputes come in all shapes and sizes and that effective legal representation requires an approach that is specifically tailored to…”

Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
16Exact matchOttawa, ON, CanadaHQ recorded Sep 4, 20261-104 contacts →

Exact match

“One of the biggest challenges known to man is reaching the highest point on Earth, Mt.”

Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
17Exact matchOttawa, ON, CanadaHQ recorded Sep 4, 20261-102 contacts →

Exact match

“At Durant Barristers, our founder Erin Durant's goal is to practice law differently.”

Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
18Exact matchOttawa, ON, CanadaHQ recorded Sep 4, 20261-102 contacts →

Exact match

“Law at Work - L@W is a law firm focused on providing expert advice and advocacy in employment matters, and in general counsel, to organizations.”

Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
19Exact matchOttawa, ON, CanadaHQ recorded Sep 4, 20261-102 contacts →

Exact match

“Civil litigation (commercial disputes, contracts, shareholders' disputes, debt recovery defamation); Business law (contracts, shareholders' agreements, not-for-profit…”

Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
20Exact matchOttawa, ON, CanadaHQ recorded Sep 4, 20261-101 contacts →

Exact match

“Altair Law is an Ottawa law firm that delivers legal services to individuals, start-ups, entrepreneurs, and small and medium sized businesses.”

Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
21Exact matchOttawa, ON, CanadaHQ recorded Sep 4, 20261-101 contacts →

Exact match

“For more than a decade, Jensen IP has been helping companies protect their trademark and brand assets in Canada and around the world.”

Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase

Showing 21 of 38 international law firms based in Ottawa, Canada

See the full list, filter by size, metro and specialty, and access 1,481 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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International law firms based in Ottawa, Canada at a glance

As of Sep 4, 2026
68.5%Verified-email coverage
56.9Average contacts per company
1-10Median size (employees)
Sep 4, 2026Page data refreshed

Companies by employee count

1-10
23
11-50
7
51-200
6
501-1,000
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 38 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 Ottawa, Canada whose business descriptions match “international law firms” 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 1,481 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 September 4, 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.

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 “international law firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many international law firms are there based in Ottawa, Canada?

RevenueBase identified 38 company matches for international law firms associated with Ottawa, Canada as of September 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?

Smart & Biggar tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city in Canada has the most international law firms?

Toronto leads Canada with 210 company records, followed by Montreal (116) and Vancouver (78). Ottawa has 38.

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 1,481 professional contacts with verified work emails tracked across these 38 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 September 4, 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.