Offensive Lineman, a player who plays on the offensive line of scrimmage in American football

Old Lawrentians, alumni of St. Lawrence College, Ramsgate, England

Ol Chiki script

Ostfriesische Lufttransport (IATA code: OL), a scheduled and charter airline based in Emden in Germany

Office lady, a low-tier female office worker in Japan

Ol is the standard abbreviation for Oulu railway station, Finland

-ol, the suffix of chemical compounds that are alcohols

OL!, a non-political youth organization in Azerbaijan

Optics Letters, the journal published by the Optical Society of America

Olympique Lyonnais, a prominent French football club

OL is a USCS symbol for organic silt and/or clay