Alex Carter (born Alex Apostolopoulos, November 12, 1964) is a Canadian actor best known for his role as LVPD Homicide Detective Lou Vartann on CSI.

His television roles have included starring roles on Family Passions, Black Harbour, Traders, Made in Canada, Taking the Falls, These Arms of Mine, The Mermaid Chair, and Veritas: The Quest, as well as guest roles on CSI: Crime Scene Investigation, Jericho, Point Pleasant, Due South, Leverage and Burn Notice.

His film roles have included Out of Time and The Island.