Lake Macdonald is a suburb of the Sunshine Coast,
Queensland, Australia. Lake Macdonald is within
the local government area of Shire of Noosa
(between 2008 and 2013 it was within Sunshine
Coast Region).

Located adjacent to the suburb is the Six Mile
Creek Dam, a rock and earth-fill embankment
dam across the Six Mile Creek that impounds the
reservoir, called Lake Macdonald. The main
purpose of the reservoir is for potable water
supply of the Sunshine Coast region and for
recreation.