Tank is a surname found in people of Europe, America and Indian subcontinent. See Taunk for Indian surname.
Notable people with the surname include: Jennifer Tank, American ecologist Kurt Tank (1898–1983), German aerospace engineer and test pilot Manisha Tank (born 1976), CNN International presenter Walter Tank (1897–1978), American politician Tanche family, also spelled "Tank" Carsten Tank (1766–1832) Carsten Tank Anker (1747–1824) Nils Otto Tank (1800–1864)