* As an Irish surname, shortened from McCall.
* As an English surname, from the noun caul (“kind of headdress or cap”).
* Also as an English surname, from Middle English calwe (“bald”).
* Also as an English surname, from a Middle English derivative of Latin caulae (“sheepfold”).
* As a Catalan surname, from the noun call (“narrow track”), from Latin callis (“path”). Compare Calle.
* As a German surname, Americanized from Koll, Goll.