C98

C98 or C-98 may refer to:


 * C-98 Clipper, the military designation of the Boeing 314 flying boat
 * CJYC-FM, "Big John FM", formerly known as "C98"
 * Cray C98, a model of the Cray C90
 * Ruy Lopez (ECO code), a chess opening
 * Lake Village Airport (FAA LID), Indiana, US
 * Right to Organise and Collective Bargaining Convention, 1949 (ILO code)