CCG may refer to:
CCGS John G. Diefenbaker is the name for a Canadian Coast Guard icebreaker that is expected to join the fleet in 2021–2022. She was initially expected to be in service by 2017. Her namesake, John G.
CCGS Amundsen is a Pierre Radisson-class icebreaker and Arctic research vessel operated by the Canadian Coast Guard.
CCGS Sir Wilfrid Laurier is a Martha L. Black-class light icebreaker and major navaids tender of the Canadian Coast Guard.
CCGS Louis S. St-Laurent is a Canadian Coast Guard Heavy Arctic Icebreaker. Louis S. St-Laurent's home port is St.
CCGS Griffon is a Canadian Coast Guard (CCG) High Endurance Multi-Tasked Vessel and Light Icebreaker stationed in Prescott, Ontario, Canada.
CCGS Henry Larsen is a Canadian Coast Guard Improved Pierre Radisson-class icebreaker serving in the Newfoundland and Labrador region and based in St John's, Newfoundland and Labrador.
CCGS Labrador was a Wind-class icebreaker. First commissioned on 8 July 1954 as Her Majesty's Canadian Ship (HMCS) Labrador (pennant number AW 50) in the Royal Canadian Navy (RCN), Captain O.C.S.
CCGS Earl Grey is a Samuel Risley-class light icebreaker and buoy tender in the Canadian Coast Guard. Constructed in 1986, the vessel serves a variety of roles, including light ice-breaking and buoy tending, as well as being strengthened for navigation in ice to perform tasking along the shores off the Atlantic coast of Canada.
CCGS Pierre Radisson is the lead ship of her class of icebreakers. Constructed and operated by the Canadian Coast Guard, the vessel is based at Quebec City at the mouth of the Saint Lawrence River in the Gulf of St.