Graphium weiskei, the purple spotted swallowtail, is a species of butterfly in the swallowtail family; Papilionidae. It is found only in the highlands of New Guinea. These swallowtails live in elevations of 4,500 to 8,000 feet (1,400 to 2,400 m).

The name honours the collector Emil Weiske.

• Graphium stresemanni – visually similar species

• Collins, N. Mark; Morris, Michael G. (1985). Threatened Swallowtail Butterflies of the World: The IUCN Red Data Book. Gland & Cambridge: IUCN. ISBN 978-2-88032-603-6 – via Biodiversity Heritage Library.
• Müller, C.J. and Tennent, W.J 1999 A New Species of Graphium Scopoli (Lepidoptera: Papilionidae) from the Bismarck Archipelago, Papua New Guinea 1999 Records of the Australian Museum 51: (161-168) pdf Presents a key to the closely related Graphium kosii, Graphium weiskei (Ribbe), G.stresemanni (Rothschild), G. batjanensis Okano, G. macleayanum (Leach) and G. gelon (Boisduval) all of which are confined to the Australasian region.

• Media related to Graphium weiskei at Wikimedia Commons
• Data related to Graphium weiskei at Wikispecies