Trethowan
Trethowan is a Cornish surname, found both in Cornwall and amongst members of the Cornish diaspora. People with the name include:
- Anthony Trethowan, Australian politician
- Arthur Trethowan, Australian politician
- Ian Trethowan, British television executive
- Illtyd Trethowan, British religious philosopher
- John Trethowan, Australian rules footballer
- Pat Trethowan, Australian rules footballer
- Rebecca Trethowan, New Zealand rugby union player
- Perry Trethowan, a fictional detective in a series of books by Robert Barnard
- Sir William Trethowan British professor of psychiatry, Birmingham University