Kerrin Petty-Nilsson, born 6 January 1970 in Townsend, Vermont, USA, is a US-Swedish cross-country skier. She represented the USA during the 1994 Olympic Winter Games in Lillehammer and in Nagano in 1998. She won the 1998 women's main competition of Vasaloppet. and the unofficial women's competitions in 1994 and 1996.In 1996, she won the Swedish women's 30 kilometers national championship.