Kenneth Rowntree (14 March 1915 – 21 February 1997) was a British artist. He was educated at Bootham School, York.
A Quaker and son of Howard Doncaster Rowntree (1879-1974), a First World War conscientious objector, he was also a conscientious objector in the Second World War. He worked for the War Artists' Advisory Committee.
He was one of the Great Bardfield Artists and taught at the Royal College of Art.
In 1939 Rowntree married architect Diana Rowntree née Buckley.
Rowntree worked with the architect Erno Goldfinger to produce coloured glass panels in Goldfinger's Alexander Fleming House (now Metro Central Heights in the Elephant and Castle.
In 2009 his studio was sold at auction in Newcastle-on-Tyne. The catalogue, written and researched by Steven Moore, included an introduction by Rowntree's friend and colleague John Milner.
Rowntree died on 21 February 1997.