| Type: | town |
| Kooloonong | |
| State: | vic |
| Use Lga Map: | yes |
| Coordinates: | -34.8667°N 151°W |
| Pushpin Label Position: | bottom |
| Pop: | 39[1] |
| Postcode: | 3549 |
| Dist1: | 413 |
| Location1: | Melbourne |
| Dist2: | 147 |
| Location2: | Mildura |
| Dist3: | 98 |
| Location3: | Ouyen |
| Dist4: | 264 |
| Location4: | Bendigo[2] |
| Lga: | Rural City of Swan Hill |
| Fedgov: | Mallee |
| Near-N: | Boundary Bend |
| Near-Ne: | Narrung |
| Near-E: | Kenley |
| Near-Se: | Natya |
| Near-S: | Natya |
| Near-Sw: | Bolton |
| Near-W: | Wandown, Annuello |
| Near-Nw: | Lake Powell |
Kooloonong is a locality in Victoria, Australia, located approximately 147 km from Mildura and was on the Yungera railway line.
Kooloonong was established as a soldier settlement area for returned servicemen from World War I. By the mid-1920s, it was a thriving township with a bush nursing hospital, government offices, a school, an RSL hall, a railway station and sporting facilities. The town has declined since then and now has only one occupied house, plus the rarely-used hall, a CFA shed and unused grain handling facilities.[3]
The railway north of Swan Hill was extended from Piangil to Kooloonong in March 1920[4] to support the soldier settlement farms in the area. For many years, water was carted to the location by train because there was no natural water supply.[5] The line from Piangil was closed in December 1986.[4] Kooloonong Post Office opened around June 1920 and closed in 1973. It had a polling place for federal elections from 1922.[6]
In 1926, the railway to Kooloonong was further extended to a terminus named Yungera,[7] at what is now the boundary between the localities of Kooloonong and Boundary Bend. The line was shortened back to Kooloonong in 1957.[8] Yungera had a polling place for federal elections from 1929[9] to 1937.[10]