| Type: | town |
| Dinninup | |
| State: | wa |
| Lga: | Shire of Boyup Brook |
| Local Map: | yes |
| Zoom: | 10 |
| Coordinates: | -33.816°N 116.533°W |
| Postcode: | 6244 |
| Est: | 1915 |
| Elevation: | 212 |
| Stategov: | Warren-Blackwood |
| Fedgov: | O'Connor |
| Dist1: | 283 |
| Dir1: | SSE |
| Location1: | Perth |
| Dist2: | 17 |
| Dir2: | E |
| Location2: | Boyup Brook |
Dinninup is a small town in the South West region of Western Australia. It is between Boyup Brook and Kojonup.
The town's name is Aboriginal in origin and is the name of a brook that is situated close to town. The name was first recorded by surveyors in 1877; the meaning is unknown. Originating as a railway station on the Boyup Brook to Kojonup line, the land was requested by early settlers to be set aside for a townsite in 1906. The line was completed in 1910 and the Dinninup station was opened at the same time. The town was gazetted in 1915.