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.