Tatlock may refer to:
- Tatlock, Ontario, community in township of Lanark Highlands, Ontario
- Jean Tatlock (1914-1944), American psychologist
Fictional characters:
- In television series Coronation Street:
- Albert Tatlock
- Valerie Tatlock, a.k.a. Valerie Barlow
- Tatlock, any of several in film Miss Tatlock's Millions
- Tatlock, in two series-14 episodes of ChuckleVision television series