OC-1

OC-1 may refer to:


 * OC-1, a class of specifications for SONET optical fiber in telecommunications
 * The pseudonym of a US official who shot Guantanamo captive Omar Khadr
 * The class of canoe racing: outrigger canoe, one person; see Outrigger canoeing
 * Solo Open Canoe for Whitewater canoeing