Herman Claudius van Riemsdijk (born August 26, 1948 Tiel , Gelderland , Netherlands ) is a Brazilian chess player.
He was Brazilian Champion in 1970, 1973, and 1988, and Pan American Champion in 1977. He was awarded the International Master in 1978 and was also an International Arbiter . He played 11 times for Brazil in the Chess Olympiads (1972-1974, 1978-1984, 1988-1994, 1998). 
He has written articles for several chess publications, and with Belgian chess player Willem Diederik Hajenius he co-authored the book Final Countdown , a treatise on pawn endings . He has also had a second to Brazilian junior players, and has played as widely as Australia and New Zealand .
- Jump up^ “Men’s Chess Olympiads: Herman Claudius Van Riemsdijk” . OlimpBase . Retrieved 2 May 2011 .