C93

C93 may refer to:
 * C93 (Netherlands Antilles), a political party
 * Ruy Lopez, Smyslov Variation chess openings ECO code
 * C93FM, a Christchurch-based New Zealand radio
 * Monocytic leukemia ICD-10 code
 * Wages, Hours of Work and Manning (Sea) Convention (Revised), 1949 code
 * C-93 Conestoga, a World War II American military aircraft
 * Borchardt C-93, an 1893 pistol
 * Current 93, an English experimental music band
 * C93, a civilian version of the HK93 semi-automatic rifle