Pieter Marinus Seelaar (born 2 July 1987) is a Dutch cricketer and a former captain of the national team. He is a right-handed batsman and a left-arm orthodox spin bowler. Having played for The Netherlands at Under-15, Under-17 and Under-19 level, he made his senior debut in a C&G Trophy game against Warwickshire on 3 May 2005. He then played in the ICC Trophy later that year. He made his One Day International debut against Sri Lanka on 6 July 2006. Two years later he made his Twenty20 International debut.