Nancarrow (or Nancherrow) is a Cornish surname meaning the "valley of the deer". Notable people with the surname include:
Alexandra Nancarrow (born 1993), Australian tennis player Cam Nancarrow (born 1945), Australian squash player Conlon Nancarrow (1912–1997), American-Mexican composer John Nancarrow; see Last speaker of the Cornish language Tristan Nancarrow (born 1964), Australian squash player