Ottumwa Soccer Club (OSC) is a nonprofit youth soccer organization serving Ottumwa and the surrounding communities of Wapello County in southeast Iowa. Founded in 1997 (originally as the Southern Iowa Soccer Association out of the Ottumwa YMCA), the club seeks to promote and foster the game of soccer for area youth and is open to girls and boys ages 4 to 18.

Ottumwa Soccer Club offers recreational leagues across age groups (U6 through U15), a free after-school elementary program, summer camps, and a Select competitive program that plays in the Iowa Soccer League with home games at Walsh Fields. The club has long been a driving force behind growing the game locally, including advocating for soccer as a sanctioned sport at Ottumwa High School. It is a member of Iowa Soccer.