Matthew Lappin (born 17 February 1976) is a former professional Australian rules footballer who played for the St Kilda Football Club and the Carlton Football Club in the Australian Football League (AFL). He currently serves as an AFL coach for the JLC at Hillcrest Christian College Queensland. Debuting with St Kilda in 1994, Lappin was known as a half-back flanker. Lappin played in 17 of 22 matches in the 1997 season home and away rounds in which St Kilda qualified in first position for the 1997 Finals Series, winning the club's 2nd minor premiership and 1st McClelland Trophy.