Peter Nils Sundelin (born 13 January 1947) is a retired Swedish sailor.

The brothers also won the 1971 world title in the three-person keelboat (Dragon class) and placed sixth and ninth at the 1972 and 1976 Olympics, respectively.

[2] In the 1980s, he competed with different partners in the two-person keelboat at the 1980 Olympics and world championships.

Besides sailing he played ice hockey for Skuru IK.

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