|Date of birth||6 September 1982|
|Place of birth||Seclin, France|
|Height||1.83 m (6 ft 0 in)|
* Senior club appearances and goals counted for the domestic league only and correct as of 09:58, 17 July 2013 (UTC).
Born in Seclin, Dumont started his career at Lille OSC in 2003. He came to the forefront thanks to the departure of Benoît Cheyrou. Having signed his first contract during the 2002–03 season, he enjoyed a good start to the season before a broken ankle led to a season of merely training and little else. Claude Puel, who was then the coach of Lille, decided to use Dumont as a backup for Mathieu Bodmer and Jean Makoun in midfield. He played for Lille over the eight seasons until 2011, a year in which the team won the league title, making 138 appearances and netting 9 goals.
- "Stéphane Dumont". L'Équipe (in French). Retrieved 15 March 2012.
- "Stéphane Dumont". Soccerway. Global Sports Media. Retrieved 15 March 2012.
- "Stéphane Dumont s'engage avec l'ASM FC" (in French). AS Monaco FC. 18 July 2011. Retrieved 23 July 2011.
- "Termination of contract for Stéphane Dumont". 26 May 2013. Retrieved 17 July 2013.