Emil Weiske (1867, Dolsenhain bei Altenburg – 1950, Saalfeld) was a German naturalist.
Later expeditions were to Northeast Siberia, Lake Baikal and North-Mongolia (1908) and then to Patagonia (mainly to the Rio Negro und Limay) and Paraguay (mainly) Concepcion (1911).
His collections were mostly birds, mammals, molluscs, reptiles and amphibians, beetles, butterflies, herbaria and ethnological artefacts.
His associates were, among others George Meyer-Darcis, Carl Ribbe, Friedrich Wilhelm Niepelt, the Otto Staudinger Staudinger & Bang-Haas dealership Walter Rothschild and Henley Grose-Smith.
He maintained a private museum in Saalfeld where he gave lectures on natural history and his travels.