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Chief Oshkosh (1795–1858), chief of the Menominee American Indian tribe •
OshKosh B'gosh, a children's apparel company headquartered in Oshkosh, Wisconsin •
Oshkosh Corporation, an American company that designs and builds specialty trucks, military vehicles, truck bodies and access equipment •
EAA AirVenture Oshkosh, an aviation enthusiast gathering held each year at the end of July in Oshkosh, Wisconsin •
University of Wisconsin–Oshkosh •
Glacial Lake Oshkosh, a glacial lake in the Oshkosh, Wisconsin area, ancestral to
Lake Winnebago