Stewart Greacen (born 31 March 1982) is a Scottish retired footballer who played as a central defender. Greacen started his career as a youth player with Rangers, before making his first competitive appearances with Airdrieonians. Following only three league games, he was signed by the at-the-time Scottish Premier League side Livingston where he spent most of his time on loan at Queen of the South and Morton. After leaving Livi, he played for Forfar Athletic before moving on to become captain at Morton where he had previously been on loan.