Company lists · Data verified August 2026
Top 18 Data protection law firms based in Canada
There are 35 data protection law firms headquartered in Canada (RevenueBase, August 2026). RevenueBase tracks 186 professional contacts across them, including 80 with verified work emails and 9 with mobile numbers. Montreal is the largest hub.
This list covers data protection law firms headquartered in Canada, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.
The 18 largest data protection law firms based in Canada
Ranked by team size| # | Company | Verified emails |
|---|---|---|
| 1 | 20 | |
| 2 | 22 | |
| 3 | 7 | |
| 4 | 12 | |
| 5 | 4 | |
| 6 | 2 | |
| 7 | 1 | |
| 8 | 2 | |
| 9 | 1 | |
| 10 | 1 | |
| 11 | 1 | |
| 12 | John Wunderlich & Associates, INC | 1 |
| 13 | 1 | |
| 14 | 1 | |
| 15 | Buckingham BOB LAW Offices | 1 |
| 16 | 1 | |
| 17 | 1 | |
| 18 | 1 |
Showing 18 of 35 data protection law firms based in Canada
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Data protection law firms based in Canada at a glance
As of Aug 28, 2026Companies by employee count
Data protection law firms by metro
| Metro | Companies |
|---|---|
| Data protection law firms in Montreal | 11 |
| Data protection law firms in Toronto | 9 |
| Data protection law firms in Ottawa | 3 |
| Data protection law firms in Waterloo | 2 |
| Data protection law firms in Vancouver | 2 |
| Data protection law firms in Halifax | 1 |
| Data protection law firms in Vaughan | 1 |
| Data protection law firms in Pakenham | 1 |
How this list was built
- Source
- The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
- Inclusion
- Companies whose own business descriptions match “data protection law firms”, with match quality audited by blind human judging, and headquartered in Canada.
- 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
- Contact records re-verify on a rolling cadence; 0 contacts on this list were re-verified in the last 30 days.
- Refresh
- Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.
Frequently asked
How many data protection law firms are there based in Canada?
There are 35 data protection law firms headquartered in Canada as of August 2026 (RevenueBase).
What is the largest company on this list?
DPO Consulting, headquartered in Montreal, tops this list with the largest team on record.
Which city has the most data protection law firms?
Montreal leads with 11 headquartered companies, followed by Toronto (9) and Ottawa (3).
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 80 verified decision-maker contacts tracked across these 35 companies.
How current is this list?
The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.
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About this data
RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.
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