Shamsul Maidin is a Singaporean association football referee. He first became a referee in 1996 and retired in 2007.
AFC Director of Referees since 2016 Shamsul Maidin has contributed to the development of Asian Refereeing for over two decades as a match official, instructor and manager. Having represented Asia at the 2006 FIFA World Cup and the 2005 FIFA Confederations Cup, Shamsul Maidin was twice selected AFC Official of the Year in the mentioned consecutive years. He has also won the S.League Referee of the Year award four times, in 1997, 1998, 1999 and 2001.