Mil-Lel is a settlement near Mount Gambier in South Australia.
At the 2011 census, Mil-Lel had a population of 335.
The name for this locality is believed to be a corruption of "Mullel", the name of a nearby waterhole. The name was historically spelled as two words: "Mil Lel" until the spelling was changed to "Mil-Lel" in the SA Government Gazette 28/5/2009.