Titchmarsh may refer to:
- Titchmarsh, Northamptonshire, a village in England
- Alan Titchmarsh (born 1949), English celebrity gardener, writer and broadcaster
- The Alan Titchmarsh Show
- Charles Titchmarsh (1881–1930), English cricketer
- Edward Charles Titchmarsh (1899–1963), English mathematician
- Titchmarsh theorem (disambiguation)
- Titchmarsh convolution theorem
- Brun–Titchmarsh theorem
- Valentine Titchmarsh (1853–1907), English cricketer and cricket umpire