| Gareth Williams | |
| Birth Name: | Gareth John Williams |
| Birth Date: | 1978 12, df=yes |
| Birth Place: | Bridgend, Wales |
| Ru Position: | Hooker |
| Youthyears1: | |
| Years1: | 2001–2003 |
| Years2: | 2003–2011 |
| Clubs2: | Cardiff Blues |
| Apps1: | 37 |
| Points1: | 15 |
| Apps2: | 149 |
| Points2: | 40 |
| Superyears1: | |
| Repyears1: | 2003–2010 |
| Repcaps1: | 9 |
| Reppoints1: | 0 |
| Ru Sevensnationalyears1: | |
Gareth John Williams (born 19 December 1978) is a former Wales international rugby union player. A hooker, he played for Cardiff Blues and was previously with his hometown club of Bridgend. He made his debut for Wales against France as a substitute in 2003. He made his first start for Wales against Scotland that same year.
On 18 January 2010 he was named in the 35 man Wales national Squad for the 2010 Six Nations tournament.[1]
Williams retired in 2011 due to a recurring injury.