Koorlong is a locality in Victoria, Australia, located approximately 15 km south west of Mildura. At the 2021 census, Koorlong had a population of 397.
Located in Koorlong is the 1/8-mile Sunset Strip dragstrip, the Jambaroo Park motorcycle sports complex and the Koorlong Primary School. The Post Office opened on 1 January 1912 and continues to operate alongside Koorlong Store.
On 21 January 1943, two RAAF Wirraway trainers collided over the town. Three crew members were killed, with only the instructor of one aircraft surviving.