CC1

CC1, CC-1 or cc1 may refer to:
 * cc1, the first phase of the C compiler in the GNU Compiler Collection
 * CC-1, the hull designation for the first US battlecruiser that was finished as the Lexington-class aircraft carrier USS Lexington (CV-2)
 * HMCS CC-1, a Royal Canadian Navy submarine
 * CIÉ No. CC1, an experimental Irish steam locomotive
 * CC1, a data channel used in Line 21 closed captioning
 * Southern Railway (UK) CC1, an electric locomotive of the type later known as British Rail Class 70
 * CC1, a hovercraft built by Cushioncraft
 * Dhoby Ghaut MRT station, Singapore