Company lists · Data refreshed November 2026

Top 25 Critical infrastructure contractors based in Canada

RevenueBase identified 1,266 company matches for critical infrastructure contractors associated with Canada as of November 2026 and tracks 122,525 professional contacts across them, including 52,201 with verified work emails. Calgary is the largest hub.

This list covers company matches for critical infrastructure contractors 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
1,266Companies
122,525Contacts tracked
52,201Verified emails
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The 25 largest critical infrastructure contractors based in Canada

Ranked by team size
Top 25 of 1,266 company matches for critical infrastructure contractors 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchMontreal, QC, CanadaHQ recorded Nov 6, 202610001+25,123 contacts →

Exact match

“We are a world-class engineering services and nuclear organization.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchMississauga, ON, CanadaHQ recorded Nov 6, 20265,001-10,00011,096 contacts →

Exact match

“Our organization is passionately committed to the pursuit of a better world through positive change.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchMontreal, ON, CanadaHQ recorded Nov 6, 202610001+10,892 contacts →

Exact match

“SNC Lavalin is now AtkinsRéalis.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchVancouver, BC, CanadaHQ recorded Nov 6, 20265,001-10,0006,683 contacts →

Exact match

“The Ledcor Group of Companies is one of North America’s most diversified construction companies, serving the building, heavy industrial, civil and Infrastructure, mining…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchToronto, QC, CanadaHQ recorded Nov 6, 202610001+6,003 contacts →

Exact match

“Aecon Group Inc.(TSX: ARE) is a North American construction and infrastructure development company with global experience.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchMontréal, QC, CanadaHQ recorded Nov 6, 20261,001-5,0003,319 contacts →

Exact match

“Pomerleau, whose revenues exceeded $4.8 billion in 2023, is one of the largest construction companies in Canada.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchMississauga, BC, CanadaHQ recorded Nov 6, 20265,001-10,0002,631 contacts →

Exact match

“Bird is a Canadian construction and maintenance company providing a comprehensive scope offering and a diversified portfolio of services to industrial, infrastructure and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchAB, CanadaHQ recorded Nov 6, 20265,001-10,0002,508 contacts →

Exact match

“ATCO is a global leader in housing, energy and defence, delivering the essential services people and communities depend on every day.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchMarkham, ON, CanadaHQ recorded Nov 6, 20261,001-5,0001,354 contacts →

Exact match

“GIP is one of Canada’s largest and most diversified infrastructure companies.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchRocky View County, AB, CanadaHQ recorded Nov 6, 20265,001-10,0001,243 contacts →

Exact match

“PTW Energy Services is Western Canada’s largest industrial solutions provider, delivering electrical and instrumentation (E&I) maintenance, construction, fabrication, and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchEdmonton, AB, CanadaHQ recorded Nov 6, 20261,001-5,0001,193 contacts →

Exact match

“Headquartered in Edmonton, Alberta - Valard is Canada’s premier utility contractor, with full-service capabilities for transmission, distribution, substations, foundations…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchCalgary, AB, CanadaHQ recorded Nov 6, 20261,001-5,000905 contacts →

Exact match

“At Stuart Olson, we're not just dedicated to the Canadian construction and industrial services market – we're passionate about turning projects into success stories.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchNiagara Falls, ON, CanadaHQ recorded Nov 6, 20261,001-5,000715 contacts →

Exact match

“Established in 1934, E.S.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchQuebec, QC, CanadaHQ recorded Nov 6, 2026501-1,000671 contacts →

Exact match

“Founded in 1963, Norda Stelo is one of Canada's leading engineering firms, with operations in some 50 countries.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchVancouver, SK, CanadaHQ recorded Nov 6, 2026501-1,000660 contacts →

Exact match

“Allnorth is a multi-disciplinary engineering, project delivery, and construction services company.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchEdmonton, BC, CanadaHQ recorded Nov 6, 2026501-1,000649 contacts →

Exact match

“At ISL, we share an enthusiasm for community infrastructure.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchMississauga, ON, CanadaHQ recorded Nov 6, 20265,001-10,000638 contacts →

Exact match

“Dexterra Group is a publicly listed corporation (TSX:DXT) delivering a range of support services for the creation, management, and operation of infrastructure across Canada.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchMontreal, ON, CanadaHQ recorded Nov 6, 2026201-500604 contacts →

Exact match

“Magil Construction is a private company performing services under four divisions - Buildings, Civil, Industrial and Interiors.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchMontreal, QC, CanadaHQ recorded Nov 6, 20261,001-5,000598 contacts →

Exact match

“Une ingénierie multidisciplinaire, passionnée et indépendante Chez Artelia, nous croyons que chaque projet est une opportunité unique de créer des solutions pour une vie positive.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchAbbotsford, BC, CanadaHQ recorded Nov 6, 2026501-1,000579 contacts →

Exact match

“PNR RailWorks is Canada's largest and most experienced full-service railway contractor.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchOttawa, ON, CanadaHQ recorded Nov 6, 2026501-1,000481 contacts →

Exact match

“Starting with a single-axle dump truck in 1952, R.W.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchNisku, AB, CanadaHQ recorded Nov 6, 20261,001-5,000460 contacts →

Exact match

“One Partner.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchCalgary, BC, CanadaHQ recorded Nov 6, 20261,001-5,000437 contacts →

Exact match

“In 1927, Trotter & Morton began its journey as a plumbing and heating company, employing Alberta's first ticketed plumber.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchMississauga, AB, CanadaHQ recorded Nov 6, 2026201-500415 contacts →

Exact match

“Maple Reinders is a full-service construction services provider that specializes in ICI building (industrial, commercial and institutional); and civil/environmental construction…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchBrossard, QC, CanadaHQ recorded Nov 6, 20261,001-5,000403 contacts →

Exact match

“Eurovia Québec, filiale de VINCI Construction, est l’un des principaux acteurs de la construction d’infrastructures de transport et d’aménagements urbains.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 1,266 critical infrastructure contractors based in Canada

See the full list, filter by size, metro and specialty, and access 52,201 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Critical infrastructure contractors based in Canada at a glance

As of Nov 6, 2026
42.6%Verified-email coverage
96.8Average contacts per company
11-50Median size (employees)
5.8%Largest-city concentration · Calgary
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
259
11-50
426
51-200
339
201-500
136
501-1,000
43
1,001-5,000
36
5,001-10,000
9
10001+
5

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 1,266 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 “critical infrastructure contractors” 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 52,201 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.

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 “critical infrastructure contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many critical infrastructure contractors are there based in Canada?

RevenueBase identified 1,266 company matches for critical infrastructure contractors 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?

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

Which city has the most critical infrastructure contractors?

Calgary leads with 73 company records, followed by Edmonton (62) and Toronto (56).

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 52,201 professional contacts with verified work emails tracked across these 1,266 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.