Roelant Oltmans (born in Oegstgeest, May 25, 1954) is a Dutch hockey coach. He is the head coach of the Malaysia men's national hockey team. Earlier he coached the Larensche Mixed Hockey Club men's team. He coached the Netherlands men's, India men's, Pakistan men's and Netherlands women's teams.
His first major prize was with the Netherlands women's team. He was coach from 1989 to 1993 and was world champion at the 1990 Women's Hockey World Cup in Sydney. In 1993 he moved to the men's team, he won the gold medal at the 1996 Summer Olympics after defeating Spain 3–1 in the final.
In 1998 he became world champion with the Netherlands men's team at the 1998 Men's Hockey World Cup in Utrecht. Then Oltmans moved to football. Until 2002, Oltmans served as technical director of football for NAC. Oltmans was appointed coach of the national team of Pakistan during the Olympic Games in Athens and held the position until the end of 2004. In 2005, he returned as coach of the national men's team. He held this position until the 2008 Summer Olympics.