Mamadou Seck (born 23 August 1979) is a Senegalese former professional footballer who played as a defender.
Born in Rufisque, Seck started his career as a youth in August 1998 for Toulouse and was signed by Nîmes Olympique at the beginning of the 2000–01 season.
He played only eight times for the Turkish side, moving to Le Havre AC in January 2006, playing 11 times during his 12-month stay before being released on a free transfer to Sheffield United.
However, the Senegal international found first team opportunities limited in the Premier League season.
In January 2008 he was loaned out for a month to Championship side Scunthorpe United[3] but made only one substitute appearance.