Sir Ranulph Fiennes
|Guest appearances of Sir Ranulph Fiennes|
|First appearance||28 October 2008|
|Last appearance||29 September 2015|
|Episodes with Sir Ranulph Fiennes|
Sir Ranulph Twisleton-Wykeham-Fiennes, usually shortened to Sir Ranulph Fiennes, is a guest on Countdown. He is an adventurer, famed, among other numerous other things, for running seven marathons in seven continents in seven days.