Donald Richard Spencer is an Australian singer-songwriter, musician, and former children's television presenter. He had a long tenure as a host on Play School on both the Australian version (1968–99) and the United Kingdom version (1972–88), one of only two presenters to work on both versions.

Play School is a British children's television series produced by the BBC which ran from 21 April 1964 until 11 March 1988. It was created by Joy Whitby and was aimed at preschool children. Each programme followed a broad theme and consisted of songs, stories and activities with presenters in the studio, along with a short film introduced through either the square, round or arched window in the set.