Katie Noonan (born in 1977) is an Australian singer-songwriter. In addition to a successful solo career encompassing opera, jazz, pop, rock and dance, she sings in the groups george and Elixir; performs with her mother Maggie Noonan; and, as of 2010, plays with her band The Captains. In 2008, she performed with The Wiggles in their concert for UNICEF.