Sir John Ronald Leon, 4th Baronet (born 16 August 1934), known professionally as John Standing, is an English actor.

Standing is best known for roles in the 1955 production of Titus Andronicus starring Laurence Olivier and his wife Vivien Leigh, and for leading parts in many plays such as The Importance of Being Earnest and Private Lives with Maggie Smith.

John Standing has appeared in major roles on television, including: The First Churchills (1969), Tinker, Tailor, Soldier, Spy (1979), The Choir (1995) and King Solomon's Mines (2004). John Standing is married to Sarah Standing.

Charlotte Metcalf is a journalist, editor, award-winning documentary film-maker and was co-presenter of the Break Out Culture podcast. She is Supplements Editor and a frequent contributor at The Oldie.