Gregor William Yeates, publishing as GW Yeates (19 May 1944 – 6 August 2012), was a New Zealand soil zoologist and ecologist.
He was "considered the world's leading authority in soil nematode ecology, a subject of economic and ecological importance."His PhD (under Wally Clark) and DSc were both at the University of Canterbury.He spent most of his working life at Soil Bureau, a division of DSIR, which became Landcare Research.
He published over 200 papers and described over 100 species in genera including Longidorus, Xiphinema, Hemicycliophora, Trischistoma, Dorylaimida and Iotonchus.
Holotypes of Yeates's are the earliest in the National Nematode Collection of New Zealand