OAL

OAL may refer to:

Transport

 * Cacoal Airport, Brazil
 * Oatley railway station, Sydney, Australia
 * Olympic Air, a Greek regional airline
 * Olympic Airlines, defunct, the former flag carrier of Greece

Other uses

 * California Office of Administrative Law, in the United States
 * Open Audio License
 * Der Ostasiatische Lloyd, a German language newspaper published in Shanghai, China
 * Overall length, particularly of an ammunition cartridge
 * Oakland Athletic League, a subdivision of CIF Oakland Section