C85

C85 may refer to :


 * Ruy Lopez chess openings ECO code
 * Other and unspecified types of non-Hodgkin's lymphoma ICD-10 code
 * Labour Inspectorates (Non-Metropolitan Territories) Convention, 1947 code
 * Continental C85, a 1944 engine
 * C-85 Orion, a 1931 aircraft based on the Lockheed Model 9 Orion
 * ARM Juan Aldama, a Mexican Navy ship, an Auk-class minesweeper originating in WWII
 * C85, a Draft for Standard C programming language released in 1985 for ANSI C
 * Caldwell 85 (IC 2391, the Omicron Velorum Cluster), an open cluster in the constellation Vela
 * 85th Comiket