John-Paul E. Boyd K.C.

Over the 20 years Tonii Roulston has been a member of the Calgary Bar Association, she has built her long-standing reputation as a tough criminal defence lawyer. Known for her strategic thinking, and effectiveness in the courtroom, she has represented a variety of challenging and high-profile cases. As a female lawyer, she holds an advantage in vigorously questioning female complainants on difficult details including their motivations to lie and inconsistencies in their accusations. Tonii is ...

Erin J. Runnalls is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate and Commercial Litigation, Health Care Law and Medical Negligence. Erin J., who practices law in Calgary, Alberta, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Erin J. is held by other top lawyers in the same geographic and legal practice area.

Jessica's practice focuses on commercial litigation and arbitration, with an emphasis in insolvency and restructuring. She advises clients on general commercial disputes, all aspects of insolvency and restructuring matters, including cross-border proceedings, and banking and oil and gas related litigation. Clients value Jessica’s practical and collaborative approach to complex legal disputes and restructuring proceedings. Jessica has acted for debtor companies, guiding them through the ...

Colleen Abel is a corporate and commercial lawyer in our Calgary office, with a practice that primarily focuses on energy and natural resources. In addition to her energy practice, Colleen also has broad experience in providing general advice and assistance to clients across a variety of industries, including financial, consumer goods and technology, and provides support to clients and our team in relation to M&A employment matters. She has extensive experience in interpreting, preparing ...

Clay Jacobson is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate and Commercial Litigation and Energy Law. Clay, who practices law in Calgary, Alberta, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Clay is held by other top lawyers in the same geographic and legal practice area.

Craig Gillespie is a founding partner of Cuming & Gillespie LLP . He is a leading personal injury, class action, and medical malpractice lawyer with a proven track record of success. With decades of experience representing clients throughout Western Canada, he has secured multi-million dollar settlements and verdicts in complex cases. Craig has been consistently recognized for his exceptional work, including being named medical malpractice lawyer of the year. Beyond his legal practice, Cr...

Tanya A. Frizzell is a top attorney recognized by Best Lawyers in the practice area(s) of Insurance Law and Personal Injury Litigation. Tanya A., who practices law in Calgary, Alberta, has been recognized since 2022. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Tanya A. is held by other top lawyers in the same geographic and legal practice area.

Sandy Vander Ziel joined Dunphy Best Blocksom LLP in 2013 and practices exclusively in family law. She is a registered collaborative lawyer, mediator and arbitrator, as well as a dispute resolution officer with the Court of King’s Bench. She has practiced in the area of family law at local and national law firms since 2002. Sandy has significant experience with a variety of methods of Alternate Dispute Resolution including Collaborative law, lawyer assisted mediation, arbitration and in...

Robert Froehlich currently leads the business law group in our Calgary office and from 2016 to 2020 led our Canadian oil and gas practice. Robert advises domestic and international clients on a diverse range of corporate and commercial matters, with a specific focus on the energy industry. He provides practical and strategic advice to clients on transactions and projects across the energy sector, including on liquefied natural gas, conventional and unconventional upstream petroleum and natura...

I am a Partner at Linmac LLP with a practice focused on tax planning, private capital structuring, and succession strategies for high-net-worth individuals, family offices, and privately held businesses. As both a tax and corporate lawyer, I work closely with clients to design integrated legal solutions that support business growth, wealth preservation, and long-term transition planning—helping them navigate every stage from formation and financing to exit and succession. Clients turn t...