K3

K3 may refer to:

==Transportation== China Railway K3/4 K-3 (Kansas highway), a state highway in Kansas London Bus route K3 Taquan Air, an Alaskan commuter airline (by IATA code) K-3 cart Kia Forte, a compact car sold as Kia K3 in South Korea Kia K3 (BL7), a subcompact car LNER Class K3, a class of British steam locomotives GSWRI Class K3, a Great Southern and Western Railway (Ireland) steam locomotive