Roald Engelbregt Gravning Amundsen (16 July 1872 – c. 18 June 1928) was a Norwegian explorer of polar regions. He led the Antarctic expedition (1910-12) to discover the South Pole in December 1911 and he was the first expedition leader to (undisputedly) reach the North Pole in 1926. He is also known as the first to traverse the Northwest Passage (1903-06). He disappeared in June 1928 while taking part in a rescue mission in the Barents Sea.

CCGS Amundsen is a T1200 Class Medium Arctic icebreaker and Arctic research vessel operated by the Canadian Coast Guard.

Orbit type: Mars-crosser