Gareth Thomas

Gareth Thomas may refer to:


 * Gareth Thomas (actor) (1945–2016), Welsh actor
 * Gareth Thomas (Welsh politician) (born 1954), former member of parliament for the Clwyd West constituency
 * Gareth Thomas (English politician) (born 1967), member of parliament for Harrow West
 * Gareth Thomas (rugby, born 1974), Welsh rugby union and rugby league footballer
 * Gareth Thomas (rugby union, born 1993), Welsh rugby union footballer for the Ospreys