Company lists · Data refreshed September 2026

Top 25 Litigation lawyers based in Ottawa, Canada

RevenueBase identified 42 litigation lawyers headquartered in Ottawa, Canada as of September 2026 and tracks 624 professional contacts across them, including 392 with verified work emails. Toronto is the largest hub.

This list covers litigation lawyers 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 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
42Companies
624Contacts tracked
392Verified emails
Explore this list → Free signup · no credit card · 500 free credits

The 25 largest litigation lawyers based in Ottawa, Canada

Ranked by team size
Top 25 of 42 litigation lawyers based in Ottawa, Canada, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to litigation lawyers: 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 21, 202651-20099 contacts →

Indirect evidence

“Every client.”

Source: RevenueBase Database · checked Sep 21, 2026
2Partial evidenceOttawa, ON, CanadaHQ checked Sep 21, 202651-20070 contacts →

Partial evidence

“Welcome to Mann Lawyers LLP.”

Source: RevenueBase Database · checked Sep 21, 2026
3Partial evidenceOttawa, ON, CanadaHQ checked Sep 21, 202651-20056 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 21, 2026
4Indirect evidenceOttawa, ON, CanadaHQ checked Sep 21, 202651-20052 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 21, 2026
5Partial evidenceOttawa, ON, CanadaHQ checked Sep 21, 202611-5037 contacts →

Partial evidence

“For over thirty-five years, LMS Lawyers has remained a leading full-service law firm serving Eastern Ontario, with its headquarters in Ottawa.”

Source: RevenueBase Database · checked Sep 21, 2026
6Partial evidenceOttawa, ON, CanadaHQ checked Sep 21, 202611-5024 contacts →

Partial evidence

“McNally Gervan LLP is an Ottawa law firm focusing on personal injury and insurance litigation.”

Source: RevenueBase Database · checked Sep 21, 2026
7Partial evidenceOttawa, ON, CanadaHQ checked Sep 21, 202611-5022 contacts →

Partial evidence

“Founded in 2014, Conway is a boutique litigation firm located in Ottawa.”

Source: RevenueBase Database · checked Sep 21, 2026
8Indirect evidenceOttawa, ON, CanadaHQ checked Sep 21, 202611-5022 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 21, 2026
9Indirect evidenceOttawa, ON, CanadaHQ checked Sep 21, 202611-5021 contacts →

Indirect evidence

“Rasmussen Starr Ruddy LLP (RSR) is a highly respected, Ottawa-based law firm offering forward-thinking legal counsel for both businesses and individuals.”

Source: RevenueBase Database · checked Sep 21, 2026
10Partial evidenceOttawa, ON, CanadaHQ checked Sep 21, 20261-1013 contacts →

Partial evidence

“A small litigation boutique in Ottawa, Ontario, which serves clients across the East Region.”

Source: RevenueBase Database · checked Sep 21, 2026
11Strong evidenceOttawa, ON, CanadaHQ checked Sep 21, 202611-5013 contacts →

Strong evidence

“Williams Litigation Lawyers LLP is a prominent litigation law firm founded in 1979.”

Source: RevenueBase Database · checked Sep 21, 2026
12Indirect evidenceOttawa, ON, CanadaHQ checked Sep 21, 202611-5011 contacts →

Indirect evidence

“First, we work with you.”

Source: RevenueBase Database · checked Sep 21, 2026
13Partial evidenceOttawa, ON, CanadaHQ checked Sep 21, 202611-5010 contacts →

Partial evidence

“Aitken Klee specializes in complex intellectual property litigation.”

Source: RevenueBase Database · checked Sep 21, 2026
14Indirect evidenceOttawa, ON, CanadaHQ checked Sep 21, 202611-508 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 21, 2026
15Indirect evidenceOttawa, ON, CanadaHQ checked Sep 21, 20261-108 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 21, 2026
16Indirect evidenceOttawa, ON, CanadaHQ checked Sep 21, 202611-508 contacts →

Indirect evidence

“Welcome to Simard & Associates YOUR RIGHTS.”

Source: RevenueBase Database · checked Sep 21, 2026
17Strong evidenceOttawa, ON, CanadaHQ checked Sep 21, 20261-108 contacts →

Strong evidence

“Black & Associates is an innovative civil and commercial litigation firm located in downtown Ottawa comprising of lawyers Katie Black, Kelli Day, and Sarah Lag.”

Source: RevenueBase Database · checked Sep 21, 2026
18Indirect evidenceOttawa, ON, CanadaHQ checked Sep 21, 20261-107 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 21, 2026
19Indirect evidenceOttawa, ON, CanadaHQ checked Sep 21, 20261-106 contacts →

Indirect evidence

“By blending innovation and best legal practices, we’ve consistently achieved successful results for clients.”

Source: RevenueBase Database · checked Sep 21, 2026
20Partial evidenceOttawa, ON, CanadaHQ checked Sep 21, 20261-105 contacts →

Partial evidence

“Focusing exclusively on Civil Litigation, personal injury, and Family Law, Victor Vallance Blais delivers practical, intelligent and successful solutions to clients.”

Source: RevenueBase Database · checked Sep 21, 2026
21Partial evidenceOttawa, ON, CanadaHQ checked Sep 21, 20261-105 contacts →

Partial evidence

“A.P.Strom and Associates specializes in organizing litigation by serving as litigation solicitors for businesses and individuals.”

Source: RevenueBase Database · checked Sep 21, 2026
22Indirect evidenceOttawa, ON, CanadaHQ checked Sep 21, 20261-104 contacts →

Indirect evidence

“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…”

Source: RevenueBase Database · checked Sep 21, 2026
23Indirect evidenceOttawa, ON, CanadaHQ checked Sep 21, 20261-104 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 21, 2026
24Partial evidenceOttawa, ON, CanadaHQ checked Sep 21, 20261-103 contacts →

Partial evidence

“An Ottawa litigation law firm specializing in personal injury, auto accidents, elder abuse, and estates & property disputes.”

Source: RevenueBase Database · checked Sep 21, 2026
25Partial evidenceOttawa, ON, CanadaHQ checked Sep 21, 20261-102 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 21, 2026

Showing 25 of 42 litigation lawyers based in Ottawa, Canada

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 392 reachable decision-makers.

Free signup · no credit card

View the full list →

Litigation lawyers based in Ottawa, Canada at a glance

As of Sep 21, 2026
62.8%Verified-email coverage
14.9Average contacts per company
1-10Median size (employees)
657.1%Largest-city concentration · Toronto
Sep 21, 2026Page data refreshed

Companies by employee count

1-10
23
11-50
14
51-200
5

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 42 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 litigation lawyers, 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 “litigation lawyers”. 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 litigation lawyers), 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 litigation lawyers, 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, 392 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.

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 litigation lawyers, 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 litigation lawyers are there based in Ottawa, Canada?

RevenueBase identified 42 litigation lawyers 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?

Kelly Santini LLP, headquartered in Ottawa, tops this list with the largest team on record.

Which city has the most litigation lawyers?

Toronto leads with 276 headquartered companies, followed by Vancouver (93) and Montreal (88).

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 392 verified decision-maker contacts tracked across these 42 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.

Ready to reach these companies? Verified emails and direct dials for all 42 litigation lawyers based in Ottawa, Canada. Start with a free account, no credit card.

Download this list →

Related 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 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.