Terence Graham Parry Jones was a Welsh actor, writer, comedian, screenwriter, film director, historian, and member of the Monty Python comedy team.

After graduating from Oxford University with a degree in English, Jones and writing partner Michael Palin wrote and performed for several high-profile British comedy programmes, including Do Not Adjust Your Set and The Frost Report, before creating Monty Python's Flying Circus with Cambridge graduates Graham Chapman, John Cleese, and Eric Idle and American animator-filmmaker Terry Gilliam.

Jones was largely responsible for the programme's innovative, surreal structure, in which sketches flowed from one to the next without the use of punch lines. He made his directorial debut with the Python film Holy Grail, which he co-directed with Gilliam, and also directed the subsequent Python films Life of Brian and The Meaning of Life.

Jones co-created and co-wrote with Palin the anthology series Ripping Yarns. He also wrote an early draft of Jim Henson's film Labyrinth, though little of his work remained in the final cut. Jones was a well-respected medieval historian, having written several books and presented television documentaries about the period, as well as a prolific children's book author.

In 2016, Jones received a Lifetime Achievement award at the BAFTA Cymru Awards for his outstanding contribution to television and film. After living for several years with a degenerative aphasia, he gradually lost the ability to speak and died in 2020 from frontotemporal dementia