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 compeition of Vasaloppet. She also won the unofficial women's compeitions in 1994 and 1996.