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Marta Siemiarczuk

Ottawa, ON recognized lawyers icon Recognized in Best Lawyers since 2022
Richardson Hall LLP

4 Best Lawyers awards

Awarded Practice Areas

Family Law

Biography

Marta Siemiarczuk is a Partner and Head of the Family Law Group of Nelligan Law.

Marta is a lawyer and arbitrator and practices in the areas of Family Law and Collaborative Family Law, Estates and Civil Litigation.

Marta has acted as a co-instructor at the University of Ottawa, Faculty of Law, for Civil Procedure and the Alternative Dispute Resolution Program. She is a regular guest lecturer at the University of Ottawa in Family Law. Marta is also a regular columnist on various family law topics for the Law Times.

Marta approaches her work in a client-centered manner, always striving to be efficient and to provide practical and creative solutions. She derives great satisfaction in practicing family law, as it allows her to be involved in a tangible way with her clients, and be able to make meaningful differences to their lives. And while she is dedicated and very driven, she also maintains a good sense of humour.

Marta is a member of the The Virtual Family Law Project. The Virtual Family Law Project is a group comprised of Senior Family Law Lawyers in Ottawa who bring their expertise in arbitration, mediation and court processes to permit families to continue to work towards resolution of their family law issues outside of the public court system, using remote technology.

The focus of her days outside of the office is her family, who motivate Marta to maintain a healthy perspective. Weekends find her either tinkering with renovations around the home, playing with her kids, or getting outdoors to go camping, hiking or canoeing.

Richardson Hall LLP

4 Best Lawyers awards

Overview

  • University of Ottawa, LL.B, graduated 2002
  • University of Western Ontario, B.A. Honours (Philosophy), graduated 1999

  • Ontario, 2003

  • Canadian Bar Association - Member
  • Collaborative Law Network (Ottawa) - Member
  • County of Carleton Law Association - Member
  • Ontario, 2003
  • Canadian Bar Association - Member
  • Collaborative Law Network (Ottawa) - Member
  • County of Carleton Law Association - Member
  • University of Ottawa, LL.B, graduated 2002
  • University of Western Ontario, B.A. Honours (Philosophy), graduated 1999

Client Testimonials

Awards & Focus

Lawyer of the Year Badge - 2025 - Family Law Lawyer of the Year Badge - 2023 - Family Law
Named "Lawyer of the Year" by Best Lawyers® for:
  • Family Law, Ottawa, Canada (2025)
  • Family Law, Ottawa, Canada (2023)
Recognized in The Best Lawyers in Canada 2026 for work in:
  • Family Law

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