Pieter Kollen (May 27, 1939 -- August 5, 2007) was an American figure skater and coach. In 1962 he won the U.S. Figure Skating Championships in Pair skating with partner Dorothyann Nelson. They placed 8th at the 1962 World Figure Skating Championships. The following season, skating with Patti Gustafson, Kollen placed 3rd at the US Championships and 9th at Worlds.
For many years following his own competitive career, Kollen was a coach at the Indiana/World Skating Academy in Indianapolis, Indiana. He was the inventor of the "K-Pick" -- an innovative skate blade design with the toe pick extended to the side of the blade.