Alfred Manuel "Bobby" Petta (born 6 August 1974) is a Dutch footballer who played as a left winger. Formed at Feyenoord, he spent most of his career in Britain, most notably with Ipswich Town of the Football League First Division and Celtic of the Scottish Premier League. He also had a loan at Fulham in the Premier League in 2004, and several years in the Australian A-League with Adelaide United and Sydney FC.