Arnold Stephenson Rowntree (28 November 1872 – 21 May 1951) was a Quaker and Liberal MP for York, England.

They had three sons and three daughters, including Tessa Rowntree who helped refugees flee Czechoslovakia before World War II.

He was also associated with fellow Liberal MP Thomas Edmund Harvey in an amendment to the provision for conscientious objectors in the Military Service Act 1916.

The same year, he took up the cause of the Richmond Sixteen, a group of conscientious objectors who were sent to France after refusing to undertake even non-combatant duties.

He was a Director of North of England Newspaper Co. (Limited), The Nation, the Westminster Press and Associated Papers.