Olinda Creek (Woiwurrung: Gnurt-bille-worrun)[1] is a major tributary of the Yarra River in Victoria, Australia.

Its origins are in the Dandenong Ranges, and it is notable for passing through the settlement of Lilydale (now a suburb of Melbourne) before joining with the Yarra near Coldstream.

The formal naming process began with the survey of Lilydale township by John Hardy in 1859–60.

This stopped water flowing into Olinda Creek at the northern end of the reservoir.

A second, minor dam wall at the southern end stops water flowing into Emerald Creek.