Firm Index · Market ranking
Top law firms in Ottawa
The firms with the largest mapped presence in Ottawa, ranked 0–100 by the Sartori Firm Index.
›Top law firms in Ottawa: 8 firms, index 01 Nov 2026
Top law firms in Ottawa, on the Sartori Firm Index generated 01 Nov 2026, are 8 firms with a mapped presence, drawn from an index of 700 firms. Sartori & Partners has completed 400+ placements since 2017 (230+ in-house), including 52 general counsel and chief legal officer searches, with a shortlist in 24 days and a median of 11 weeks to an accepted offer. On a Sartori & Partners search, a NASDAQ-listed medtech in Boston hired its successor general counsel in week 11 from a shortlist of four on day 24.
Leading firms in Ottawa by Index
These law firms have the largest mapped presence in Ottawa, ranked by the Sartori Firm Index — a 0–100 measure of scale, reach and hiring, built from public data. The ranking reflects the size and momentum of each firm's overall public footprint, not the quality of its Ottawa office or a claim about local headcount. Use it to see which firms dominate the Ottawa market and where momentum points.
| # | Firm | Index | Tier | Attorneys mapped | Strengths |
|---|---|---|---|---|---|
| 1 | Fasken | 58.4 | International | 1,000–1,500 | Corporate & M&A, Litigation & Disputes, Employment & Labor |
| 2 | Gowling WLG | 51.9 | Global | 1,500–2,500 | Litigation & Disputes, Real Estate, Corporate & M&A |
| 3 | Borden Ladner Gervais | 46.5 | National | 1,000–1,500 | Litigation & Disputes, Corporate & M&A, Employment & Labor |
| 4 | Blake Cassels & Graydon | 43.4 | International | 1,000–1,500 | Corporate & M&A, Litigation & Disputes, Finance & Banking |
| 5 | Stikeman Elliott | 41.2 | International | 500–1,000 | Corporate & M&A, Litigation & Disputes, Real Estate |
| 6 | Osler Hoskin & Harcourt | 39.8 | International | 500–1,000 | Corporate & M&A, Litigation & Disputes, Tax |
| 7 | Bennett Jones | 39.7 | International | 500–1,000 | Corporate & M&A, Litigation & Disputes, Real Estate |
| 8 | Perley-Robertson, Hill & McDougall | 20.5 | National | 50–100 | Litigation & Disputes, Real Estate, Corporate & M&A |
Index measures public footprint and momentum, not quality or prestige. Methodology. Spot an error? Tell us.
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View the indexLaw firms in Ottawa — common questions
How are the top firms in Ottawa ranked?
Firms are ordered by the Sartori Firm Index — a 0–100 score from public signals (scale, reach, live hiring). This page lists firms with a recorded attorney presence in Ottawa, ranked by their overall Index. It reflects public footprint and momentum, not the quality of any firm's Ottawa office.
Does a presence in Ottawa mean a large local office?
Not necessarily. The Index records that a firm maps attorneys to the Ottawa market on public sources; it does not claim a specific office size. Headcount is shown only as ranges.
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