Sigma Autosport was a CART Champ Car racing team that competed in 2001 and 2002.
Sigma competed in the 2001 CART season with driver Oriol Servià.
[1] For the 2002 CART season, Sigma hired veteran Max Papis, who had recently been let go from Team Rahal.
[3] Papis sat sixth in points after his last race start at Laguna Seca, having scored third-place finishes at Long Beach and the Milwaukee Mile.
The team also fielded a Toyota Atlantic car for Tom Wieringa's son David, who completed the 2002 season with the team finishing 16th in points with a best finish of tenth at Toronto.