Whitelock is a surname. Notable people with the surname include:
Thomas Whitelock Kempthorne (1834–1915), New Zealand manufacturing chemist and businessman
Henry Whitelock Torrens (1806–1852), son of Major Henry Torrens
Adam Whitelock (born 1987), New Zealand rugby union footballer
Dorothy Whitelock (1901–1982), English historian
George Whitelock (born 1986), rugby union player
John Whitelock (1757–1833), British army officer
Loran Whitelock, American botanist who specializes in Cycads
Luke Whitelock (born 1991), New Zealand rugby union footballer
Max Whitelock (born 1993), English gymnast from Hertfordshire, UK
Sam Whitelock (born 1988), New Zealand born rugby player
