Kevin Hamilton McDonald (born May 16, 1961) is a Canadian comedian and actor, known as a member of the Canadian sketch comedy group Kids in the Hall.

McDonald was born in Montreal, Quebec, the son of Sheila and Hamilton McDonald, who was a dental equipment salesman. He moved to Los Angeles, California at the age of seven, after his father was transferred there. His family subsequently lived in Toronto, Ontario as well. McDonald has a younger sister, Sandra.

During his youth he had a weight problem. It wasn't until just prior to the Kids' TV show in the late 1980s that he went from overweight to rather skinny. Several sketches and monologues allude to the issue, and a stockier McDonald can be seen in archival footage on the Kids in the Hall on DVD box sets