Jonathan Stephen Ross OBE (born 17 November 1960 in London, England) is a triple BAFTA Award-winning English film critic and presenter of radio and television. Working extensively with the BBC, Ross has presented The Film programme since 1997, his own chat show, Friday Night with Jonathan Ross since 2001, and a radio show on BBC Radio 2 beginning in 1999. He also appeared for years as a panelist on They Think It's All Over and was the annual host of the British Comedy Awards from 1991-2007, broadcast on ITV. Ross is known for his distinctive voice, flamboyant style of dress, and his light-hearted banter. Ross has a boldness in presenting, which some would consider often risqué, and as a result, he has sometimes been surrounded by controversy.

Ross is the son of British actress and radio presenter Martha Ross, grew up in Leytonstone and is the brother of English journalist, television editor, and media personality Paul Ross, TV Producer/Actor Miles Ross and TV Producer Simon Ross. He was educated at Norlington School for Boys, a secondary modern school at the same time as his elder brother Paul, and also at Leyton County High School for Boys, a grammar school. He also attended Southampton College of Art and studied Modern European History at the School of Slavonic and East European Studies, University of London; he was made a Fellow of UCL (into which SSEES was absorbed) in 2006.

Ross began his career as a researcher on the Channel 4 show Loose Talk. After leaving this, he worked on various other shows before beginning another research job on Soul Train, which became Solid Soul.