UC2

UC2 may refer to:


 * GERMAN SUBMARINE UC-2
 * SM UC-2, a German World War I submarine
 * German Type UC II submarine of World War II
 * UC2 Kraka, a Danish private diesel-electric submarine
 * uranium acetylide (UC2) see Uranium carbide
 * .uc2, archive format for the UltraCompressor II; see List of archive formats