| William Louiron | |
| Birth Date: | 13 March 1978 |
| Birth Place: | Ancenis, France |
| Currentclub: | Quevilly-Rouen (assistant manager) |
| Position: | Defender |
| Years1: | 1997–2001 |
| Caps1: | 119 |
| Goals1: | 7 |
| Years2: | 2001–2002 |
| Caps2: | 18 |
| Goals2: | 0 |
| Years3: | 2002–2004 |
| Caps3: | 44 |
| Goals3: | 1 |
| Years4: | 2004–2007 |
| Caps4: | 97 |
| Goals4: | 8 |
| Years5: | 2007– |
| Caps5: | 164 |
| Goals5: | 8 |
| Club-Update: | 18:30, 16 June 2013 (UTC) |
William Louiron (born 13 March 1978 in Ancenis) is a French former professional footballer. He is currently assistant manager of Ligue 2 club Quevilly-Rouen. Louiron played professionally in Ligue 2 for Angers SCO, Grenoble Foot 38 and Stade Reims.[1]