Cal

There is more than one place called Cal:

Turkey

 * Çal — a town in Denizli district, Southern Aegean

Portugal

 * Cal Islet —  a small island about 500 m south of  Porto Santo, Madeira

Others
A short form for
 * the state of California
 * Calcutta, the old name of the city of Kolkata

CAL is abbreviation for
 * Carolinian language ISO 639-3 code
 * China Airlines ICAO airline code
 * Campbeltown Airport, IATA airport code
 * Continental Airlines, an American airline with the New York Stock Exchange symbol of "CAL"