Lieutenant-Colonel Richard Pepper Arden, 3rd Baron Alvanley (8 December 1792 – 24 June 1857) was a British Army officer and peer. He was the son of Richard Pepper Arden, 1st Baron Alvanley and Anne Dorothea (née Wilbraham-Bootle). As a young man, he was one of a circle of friends surrounding William Wilberforce.