McKinlay is a surname. Notable people with the surname include:
Adam McKinlay (1887–1950), member of the British House of Commons for a number of Scottish constituencies
Billy McKinlay (born 1969), former Scottish footballer, Reserve Team Manager of Fulham in London, England
Bob McKinlay (1932–2002), Scottish footballer who played for Nottingham Forest
Donald McKinlay (1891–1959), Scottish footballer (defender)
Duncan E. McKinlay (1862–1914), U.S. Representative from California
John McKinlay (1819–1872), explorer of Australia
Ken McKinlay (1928–2003), international speedway rider
Tosh McKinlay (born 1964), Scottish former international footballer
Dr Edward McKinlay (born 1921), Scottish minister with The Presbyterian Church of Canada
Dr. Kirt McKinlay MD. (born 1952) American doctor that currently resides in the state of Idaho
Mr. Michael McKinlay, Tasmanian, Professional Frankie Muniz Impersonator