Morcillo is a surname. Notable people with the surname include:
Ángel Moreno Morcillo (born 1997), Spanish footballer Diego Morcillo Rubio de Auñón (1642–1730), Spanish bishop Jon Morcillo (born 1998), Spanish footballer Jorge Morcillo (born 1986), Spanish footballer Sebastián Fox Morcillo (1526?-1559?), Spanish scholar and philosopher