What does KEF stand for?

Kane and Benson, Kailua-Kona, HI - Manufacturer code for watercraft hull identification number (USCG)

Keflavik - Iceland - Airport symbol (AD)

Kent Engineering and Foundry loudspeakers - A loudspeaker manufacturer (TLAA)

Korea Equity Fund - NYSE symbol (SPSG)

Kpessi - Language symbol (ETLW)

Reykjavik - Iceland Keflavik Airport - Airport symbol (OAG)