About Diann

Diann Castle was born in Oxbow, Saskatchewan, and raised in Cochrane, Alberta. She earned a psychiatric nursing diploma from Alberta Hospital Edmonton in 1977 and a rehabilitation counselling diploma from Red Deer College in 1978, then worked as a nurse at Foothills Hospital before pursuing law. She received a Bachelor of Arts from the University of Calgary in 1983 and a Juris Doctorate from the University of Windsor in 1987, and was called to the bar in 1988. She articled with Meurin & Isbister before founding Castle & Associates in 1991, and has since appeared in more than 100 reported decisions across Alberta's courts, with a practice focused on family law and child welfare matters. She favours mediation, negotiation, and counselling before resorting to litigation.

Practice areas

Family Law Civil Litigation & Dispute Resolution

Education & credentials

Law school
University of Windsor
Undergraduate
University of Calgary, Bachelor of Arts (1983)
Other degrees
Diploma in Psychiatric Nursing, Alberta Hospital Edmonton (1977)
Diploma in Rehabilitation Counselling, Red Deer College (1978)

Listing compiled from public sources in July 2026. Confirm Diann P. Castle’s licence and standing in the Law Society of Alberta directory ↗