Ganchev is a Bulgarian surname. Notable people with the surname include:
Aleksandar Ganchev (born 2001), Bulgarian footballer Dimitar Ganchev (1875–1912), Bulgarian revolutionary Grisha Ganchev (born 1962), Bulgarian businessman and oligarch Ivko Ganchev (born 1965), Bulgarian football goalkeeper Vitaly Ganchev (born 1975), Ukrainian-Russian police officer and politician