Firm Index · Practice × market
Top Corporate & M&A firms in Ottawa
The firms combining the deepest corporate & M&A footprint with a presence in Ottawa, ranked by the Sartori Firm Index.
Corporate & M&A firms in Ottawa
These law firms pair a strong public Corporate & M&A footprint with a recorded 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 public footprint and momentum, not the quality of any firm's corporate & M&A work in Ottawa.
| # | Firm | Index | Tier | Attorneys mapped | Markets |
|---|---|---|---|---|---|
| 1 | Fasken | 58.4 | International | 1,000–1,500 | Toronto, Montreal, Vancouver… |
| 2 | Gowling WLG | 51.7 | Global | 1,500–2,500 | Ottawa, Toronto, Birmingham… |
| 3 | Borden Ladner Gervais | 46.6 | National | 1,000–1,500 | Toronto, Montreal, Vancouver… |
| 4 | Blake Cassels & Graydon | 43.5 | International | 1,000–1,500 | Toronto, Vancouver, Calgary… |
| 5 | Stikeman Elliott | 41.1 | International | 500–1,000 | Toronto, Montreal, Calgary… |
| 6 | Osler Hoskin & Harcourt | 39.8 | International | 500–1,000 | Toronto, Montreal, Calgary… |
| 7 | Bennett Jones | 39.5 | International | 500–1,000 | Toronto, Calgary, Vancouver… |
| 8 | Perley-Robertson, Hill & McDougall | 20.5 | National | 50–100 | Ottawa |
Index measures public footprint and momentum, not quality or prestige. Methodology. Spot an error? Tell us.
Related views
Top Corporate & M&A firms
The leading firms in this practice, everywhere.
View rankingTop firms in Ottawa
The leading firms across all practices in this market.
View marketWho's hiring in Corporate & M&A
Firms advertising live roles in this practice now.
See hiringExplore the full Ottawa talent market →
Every Ottawa practice ranking (6)
Employment & LaborFinance & BankingIntellectual PropertyLitigation & DisputesReal EstateTax
Corporate & M&A rankings in other markets (166)
Abu DhabiAkronAlbanyAmsterdamAthensAtlantaAugustaAustinAustraliaBaltimoreBangkokBarcelonaBaton RougeBeijingBelfastBerlinBirminghamBoiseBostonBrisbaneBristolBrusselsBuffaloCairoCalgaryCambridgeCanadaCanberraCharlestonCharlotteChicagoChinaCincinnatiClevelandCologneColumbiaColumbusDallasDaytonDenverDetroitDubaiDublinDüsseldorfEdinburghFort MyersFrankfurtFresnoGermanyGlasgowGrand RapidsGreensboroGreenvilleGuangzhouHaifaHamburgHangzhouHanoiHarrisburgHartfordHo Chi Minh CityHong KongHoustonIndianapolisItalyJacksonJacksonvilleJakartaJerusalemKalamazooKansas CityLansingLas VegasLeedsLexingtonLisbonLiverpoolLondonLos AngelesLouisvilleLuxembourgMadisonMadridManchesterMarylandMelbourneMemphisMexicoMexico CityMiamiMichiganMilanMilwaukeeMinneapolisMinnesotaMobileMonterreyMontrealMorgantownMunichNaplesNashvilleNetherlandsNew HavenNew JerseyNew OrleansNew YorkNew York CityNewarkNewcastle upon TyneNottinghamOhioOklahoma CityOregonOrlandoOxfordPalm BeachParisPensacolaPerthPhiladelphiaPhoenixPittsburghPortlandPrincetonProvidenceRaleighReadingRenoRichmondRiyadhRochesterRomeRotterdamSacramentoSalt Lake CitySan AntonioSan DiegoSan FranciscoSarasotaSeattleSeoulShanghaiSheffieldShenzhenSingaporeSpainSpringfieldSt. LouisStockholmStuttgartSydneySyracuseSão PauloTallahasseeTampaTel AvivTexasTokyoTorontoTulsaVancouverVirginiaWarsawWashingtonWilmington
Corporate & M&A · Ottawa
Turn the ranking into a shortlist.
Whether you are building a team or weighing a move, we listen first. No obligation.