Surname Treacher (Treacher 
) , across the world, is a rare last name. The cognomen Treacher is habitual in Cayman Islands, where it is quite a rare surname, the United Kingdom, where it is a rare surname, and Ireland. Measured by absolute frequency, the name is most common in the United Kingdom, the United States, and Australia. Much less frequently, Treacher is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Treacher | United Kingdom, Australia, Ireland, United States, Canada |
Treacherous, Trecher, Tricher, and Tricheur
|
william hood treacher British colonial administrator, GB (b. 1849) |
|
|
arthur treacher English actor (1894–1975), GB (b. 1894) |
|
| george treacher (b. 1835) |
|
|
| llewellyn treacher (b. 1859) |
|
|
|
john treacher British admiral (1924-2018), CL (b. 1924) |
|
| bill treacher British actor, GB (b. 1930) |
|
|
| grace treacher (died 1845) |
|
|
| helen treacher Ph.D. University of East Anglia 2006 |
|
|
| jamie treacher British actor (b. 1986) |
|