About Gibson Tanner Rabin LLP

Gibson Tanner Rabin LLP is a mid-sized Ottawa law firm formed in 2024 by founding partners Russell Gibson, Jason Rabin, and Harland Tanner. It launched with twelve lawyers, two registered paralegals, and ten clerks and support staff, organized around four practice pillars: corporate and commercial law, real estate, wills and estates, and civil litigation and family law. The firm's lawyers describe their practices as having roots in Ottawa going back more than 50 years; counsel John Piazza, for instance, was called to the Ontario bar in 1973. The firm offers services in English, French, Italian, German, Sinhala, Tamil, and Arabic.

Before co-founding the firm, Gibson worked as a journalist, including as a reporter for United Press Newswire and a member of the Parliamentary Press Gallery, then built an independent practice focused on not-for-profit and public sector clients such as hospitals, universities, and schools. Rabin practiced insurance litigation at firms in Toronto and at a national firm's Ottawa office before co-founding Gibson Tanner Rabin, and has taught Civil Procedure at the University of Ottawa. Tanner, called to the bar in 2008, concentrates on real estate and wills and estates, advising on matters from residential purchases to condominium and land development projects.

In the community

  • Founding partner Russell Gibson serves as president of the Catholic Centre for Immigrants Foundation and as a board director of The Pearson Centre for Progressive Policy.
  • Founding partner Harland Tanner volunteers as a legal volunteer with Reach Canada and serves on the board of Jewish Family Services of Ottawa.
  • Associate Melissa Eberly serves as secretary to the board of the Catholic Centre for Immigrants Foundation and as a board member of the Mainstreeter community newspaper.
  • The firm takes part in Indo-Canada Ottawa Business Chamber networking events, including a June 2026 session on buying and selling a business.

Good to know

A person using a wheelchairWheelchair accessibleA calendar with a checkmark beside a clockBy appointment

This firm’s lawyers at a glance

Called to the bar
1973–2024 · median 11 years in practice 8 of 11 lawyers
Law schools
University of Ottawa (4), Osgoode Hall Law School, Queen's University 6 of 11 lawyers
Languages on the roster
Arabic, English, Farsi, French, Mandarin, Sinhala, Spanish, Tamil

Where to find them

225 Metcalfe St #600, Ottawa, ON K2P 1P9 · 613-238-2244

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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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