Warnock is a surname, and may refer to:
- Bob Warnock, a sailor on the deck of the submarine, USS Cachalot, when the attack on Pearl Harbor began
- Bryan Warnock, originator of Warnock's Dilemma
- Diana Warnock (born 1940), Australian radio broadcaster and politician
- Geoffrey Warnock (died 1995), British philosopher and former Vice-Chancellor of Oxford University
- Jimmy Warnock (fl. 1930s), Belfast boxer who fought and beat Benny Lynch when World Champion in 1936 and again in 1937
- John Warnock (born 1940), American co-founder of Adobe Systems software company
- Mary Warnock, Baroness Warnock (born 1924), a British philosopher and chair of the Committee of Inquiry into Human Fertilisation and Embryology, which produced the Warnock Report (1978): Special Educational Needs and the Warnock Report (1984): Human Fertilisation and Embryology.
- Neil Warnock (born 1948), is a football manager, currently of Leeds United Football Club.
- Robert Warnock (born 1987), Australian rules footballer.
- Stephen Warnock (born 1981), English footballer, currently playing for Aston Villa.
Warnock may also refer to:
- Warnock's Dilemma, interpretations of a lack of response to online postings
- Warnock (typeface)