Cal is a surname. Notable people with the surname include:
Cal Anita M. Cal (born 1966), American writer David Cal (born 1982), Spanish sprint canoer Kaye Cal (born 1989), Filipino singer-songwriter Rafael Cal (born 1949), Mexican swimmer
Çal Meryem Cennet Çal (born 2000), German-Turkish footballer
See also Da Cal, surname Cal (given name)