Lieutenant-Colonel Richard Pepper Arden, 3rd Baron Alvanley (8 December 1792 – 24 June 1857) was a British Army officer and peer.

[1] He was the son of Richard Pepper Arden, 1st Baron Alvanley and Anne Dorothea (née Wilbraham-Bootle).

Arden fought at the battles of Morales, Vittoria, Orthez and Toulouse and received the service medal for the latter three.

Arden was gazetted a captain in the 2nd Garrison Battalion on 26 April 1815,[3] being unable to afford a captaincy in a cavalry regiment.

[8] On 24 April 1831, he married Lady Arabella Vane (1801–1864), youngest daughter of the 1st Duke of Cleveland.