Trethewey is a surname of Cornish origin. It is derived from any of the various settlements in Cornwall called Trethewey.
Notable people with the surname include:
- Fred Trethewey (born 1949), British archdeacon
- Natasha Trethewey (born 1966), American poet
- Richard Trethewey (born c. 1955), American plumber and television personality
- Robert Trethewey (1902–1989), Australian politician
- Tom Trethewey (born 1944), American swimmer
- William Griffith Trethewey (1865–1926), Canadian inventor, prospector and farmer
- William Trethewey (1892–1956), New Zealand sculptor and monumental mason
- Hanks, Patrick; Hodges, Flavia; et al. (2002). The Oxford Names Companion. Oxford University Press. p. 621. ISBN 0198605617
- "Cornish Surnames - extensive A-Z list". Ancestry.com. Archived from the original on 2011-07-07. Retrieved 2011-06-18.
Surname listThis page lists people with the surname Trethewey. If an internal link intending to refer to a specific person led you to this page, you may wish to change that link by adding the person's given name(s) to the link. Category: