About Nelligan Law

Clients rate this firm highly on Google.

Nelligan Law is a full service law firm in Ottawa that practices under the legal name Nelligan O'Brien Payne LLP. The firm dates its founding to 1963, with John Nelligan and Denis Power among its founders. Nelligan was called to the bar from Osgoode Hall Law School in 1949 and moved to Ottawa in 1955, while Power was called to the Ontario Bar in 1965. The partnership of Nelligan Power formed in 1969, and in 2019 the firm refreshed its public brand to Nelligan Law.

Today the firm has grown to more than 100 lawyers and professionals, working across family law, employment law, personal injury, business law, litigation, estates, real estate, insurance, construction, and intellectual property. Its labour team has represented unions and their members for more than 50 years, and its intellectual property group works with entrepreneurs, artists, businesses, and Indigenous communities on trademark, copyright, trade secret, and domain name matters in Canada and internationally. The office is downtown in the Sun Life Centre on O'Connor Street, and the firm offers services in French as well as English.

In the community

  • Nelligan Law contributed $100,000 to The Ottawa Hospital over a four-year period from 2016 to 2020 to support critical healthcare initiatives in the region.
  • The firm has sponsored the University of Ottawa Faculty of Law's Moot Court for many years.
  • Each holiday season, Nelligan Law gathers hampers for families in need through the Boys and Girls Club of Ottawa.
  • Nelligan Law sponsors Ronald McDonald House's Skifest, which helps families of seriously ill children with accommodations.
  • The firm is an annual sponsor of the Royal Ottawa Open, which raises funds for patient care and mental health research at The Royal.
  • Nelligan Law raises funds and provides free legal education for Kind Space, a community hub for the 2SLGBTQ+ community.
  • The firm's employment lawyers hold free seminars on workplace rights for the Muslim Legal Support Centre.
  • During the pandemic, Nelligan Law ran a free employment law helpline that supported more than 550 people facing job loss and workplace health and safety concerns.
  • Nelligan Law has long sponsored the GCTC Lawyer Play, which has supported organizations including Roger Neilson House, Cornerstone Housing for Women, and Upstream Ottawa Mental Health Community Support.

Good to know

A person using a wheelchairWheelchair accessibleA rainbow pride heartLGBTQ+ friendlyA laptop showing a video callVirtual appointmentsA calendar with a checkmark beside a clockBy appointmentAn office interior with a desk and chairsIn-person services

This firm’s lawyers at a glance

Called to the bar
2014–2023 · median 7 years in practice 6 of 49 lawyers
Law schools
University of Ottawa (17), McGill University Faculty of Law (2), Queen's University Faculty of Law (2), University of Windsor (2), Bond University, McGill University and 10 more 35 of 49 lawyers
Languages on the roster
Arabic, English, French, Spanish

Where to find them

50 O'Connor Street, Suite 300, Ottawa ON, K1P 6L2, Canada · 613-238-8080

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This listing was generated by AI from public sources in September 2026. It may contain errors, and we can’t guarantee it’s accurate or complete. Before you rely on anything here, verify it on the firm’s own website. Verify licence status in the Law Society of Ontario directory ↗

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