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#Racing
* Solo Open Canoe for
Whitewater canoeing
{{Letter-Number Combination Disambiguation