Fibre Optic Cable

Fraction organic carbon in the field of hydrogeology

Flag of convenience

the Field Oriented Control, as used with brushless DC motors (BLDC)

Friends of Carlotta (cryptic recurring acronym from the film Dead Men Don't Wear Plaid)

Front Obrer de Catalunya

First Class CW Operators' Club, an Amateur Radio morse code organisation

First Order Condition

Father of the Chapel, a Trade Union official

Firm Order Commitment

the Faint Object Camera, as used in the Hubble Space Telescope

Star Wars: Empire at War: Forces of Corruption, an expansion for the game Star Wars: Empire at War by LucasArts and Petroglyph

Fuzhou Changle International Airport - (IATA: FOC, ICAO: ZSFZ)