Kate Ellis (born 22 September 1977), Australian politician, was elected to the House of Representatives as member for the Division of Adelaide, South Australia for the Australian Labor Party at the 2004 federal election. She defeated Liberal Party incumbent Trish Worth. She is the youngest member of the House of Representatives.

Ellis was born in Melbourne and grew up in rural South Australia along the Murray River, moving to Adelaide for her senior education. She studied international relations at Flinders University, where she was General Secretary of the Students Association and an editor of Empire Times. She worked as a research officer for state and federal parliamentarians, and was a ministerial adviser to South Australian state minister Rory McEwen and then for the Deputy Premier of South Australia, Kevin Foley.

1977 births | Living people | Australian Labor Party politicians | Members of the Australian House of Representatives | Members of the Australian House of Representatives for Adelaide