John McLiam (1918-1994) was a prolific Canadian-American character actor whose film career spanned decades. Recognizable for his rugged face and authentic presence, McLiam specialized in supporting roles, often portraying ordinary men, working-class individuals, gruff yet sometimes good-hearted figures, or authoritative characters with a touch of gravitas.

Among his most significant appearances are acclaimed films such as Richard Brooks' *In Cold Blood* (1967), the prison drama *Cool Hand Luke* (1967) alongside Paul Newman, and Robert Wise's sci-fi classic *The Andromeda Strain* (1971). His ability to lend depth and credibility even to minor roles made him a constant and valued presence in American cinema.