Justin Westhoff (born 1 October 1986) is a former Australian rules footballer who played for the Port Adelaide Football Club in the AFL. He also played for the Central District Football Club in the SANFL. He is the older brother of Matthew Westhoff and younger brother of Leigh Westhoff. Westhoff was selected by Port Adelaide in the 2006 draft using their fifth-round pick, being the 71st pick overall.