Last name Tūn (Clayton 
, Royston , Keston 
) , worldwide, is a common family name. The cognomen Tūn is habitual in Guernsey, where it is quite a common surname, Jamaica, and Aland Islands (explore the name in all countries). In absolute terms, this name is the most popular in the United States, the United Kingdom, and Australia. Likewise, Tūn is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Clayton, Royston | United Kingdom, South Africa, Australia, United States, Brazil |
| Keston | United Kingdom, South Africa, United States, Canada, Brazil |
| Tūn | Myanmar |
Abdon, Acton, Alderton, Aldington, Allington, Alton, Ashton, Babington, Barton, Berrington, Bickerton, Bilton, Booton, Boynton, Brassington, Bretherton, Brotherton, Caxton, Cherrington, Chilton, Christon, Clifton, Clutton, Cotton, Coulton, Cranston, Darrington, Deighton, Dorrington, Dufton, Dumbleton, Edenfield, Edmonton, Eggleston, Ellerton, Everton, Fulton, Gatton, Hamerton, Hammerton, Hampton, Harton, Holton, Hopton, Horton, Kidston, Kirton, Knapton, Knowlton, Luddington, Luxton, Manton, Melton, Murton, Pinkerton, Ponton, Preston, Roston, Shackleton, Sherrington, Skeffington, Staunton, Stockton, Thorington, Thornton, Tine, Toun, Town, Troughton, Tuin, Tun, Walton, Watton, Weddington, Whitton, Wormington, and Wrighton