Alcock is a surname, and may refer to:
- Alfred William Alcock, British naturalist
- C. W. Alcock, British sports administrator and creator of the FA Cup
- Charles R. Alcock, American astronomer
- Deborah Alcock, British author of fiction
- Edward Alcock, English footballer who played for Tranmere Rovers
- George Alcock, British astronomer
- George Alcock (footballer),English footballer
- Harry Alcock, English footballer who played for Walsall
- James Alcock, Psychologist and noted skeptic
- John Alcock, one of several people including
- John Alcock (aviator), pioneer aviator, of Alcock and Brown
- John Alcock (bishop), English bishop of the fifteenth century
- John Alcock (behavioral ecologist), American bevavioral ecologist and author
- Leslie Alcock, British archaeologist
- Sir Michael Alcock, British air chief marshal
- Nathan Alcock, British physician
- Reg Alcock, Canadian politician
- Ronald Alcock (d. 1991), British stamp dealer and philatelic publisher
- Rutherford Alcock, British diplomat
- Siccature Alcock, birth name of Jah Cure, Jamaican reggae musician
- Terry Alcock, English footballer
- Vivien Alcock, British children's writer
- Walter Galpin Alcock, English organist and composer