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 , 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
See also CCI (disambiguation)