| Type: | suburb |
| Mullion | |
| State: | nsw |
| Coordinates: | -35.1361°N 148.8853°W |
| Pushpin Label Position: | right |
| Pushpin Map Caption: | Location in New South Wales |
| Lga: | Yass Valley Council |
| County: | Cowley |
| Parish: |
|
| Postcode: | 2582 |
| Pop: | 84 |
| Stategov: | Goulburn |
| Fedgov: | Eden-Monaro |
| Dist1: | 40 |
| Dir1: | NW |
| Location1: | Canberra |
| Dist2: | 45 |
| Dir2: | S |
| Location2: | Yass |
| Near-N: | Cavan |
| Near-Ne: | Jeir |
| Near-E: | Wallaroo |
| Near-Se: | Parkwood |
| Near-S: | Uriarra |
| Near-Sw: | Uriarra |
| Near-W: | Wee Jasper |
| Near-Nw: | Narrangullen |
Mullion is a locality in the Southern Tablelands of New South Wales, Australia in the Yass Valley Shire. It lies north-west of Canberra on the western side of the Murrumbidgee River.[1] At the, it had a population of 84. It had a public school from 1959 to 1972.[2] The locality is located in the Umburra parish of Cowley County, with a small part of it in Mullion parish, which lies further west.