Winnecke is a surname. Notable people with the name include:
Charles Winnecke (1857–1902), Australian explorer and botanist Friedrich August Theodor Winnecke (1835–1897), German astronomer Lloyd Winnecke (born 1960), American politician
See also Winnecke 4, a double star in the constellation Ursa Major Winnecke Catalogue of Double Stars, an astronomical catalogue of double stars published by Friedrich August Theodor Winnecke 7P/Pons–Winnecke, a periodic Jupiter-family comet in the Solar System Winnecke Goldfield, a former goldfield in the Northern Territory of Australia