Dudley Leigh Aman, 1st Baron Marley, DSC (16 May 1884 – 29 February 1952), was a British soldier and Labour politician.

Marley was the son of Edward Godfrey Aman, of Farnham, and was educated at Marlborough and the Royal Naval College, Greenwich.

After the war he made five unsuccessful attempts to enter the House of Commons for the Labour Party, at Petersfield in 1922 and 1923, at Isle of Thanet in 1924, and at Faversham in a 1928 by-election and the 1929 general election.

[2] Marley then served under Macdonald as Under-Secretary of State for War and vice-president of the Army Council from June 1930 until the government fell in August 1931.

He wrote the introduction to The Brown Book of the Hitler Terror and the Burning of the Reichstag, a publication on the conditions of the Jewish population which greatly raised awareness among American Jewry about the Jews of Germany.