Maxwell William Humphrey Aitken, 3rd Baron Beaverbrook, (born 29 December 1951) is a British peer and politician.
Maxwell Aitken is the grandson of the 1st Baron Beaverbrook and the only son of Sir Max Aitken, by his third marriage to Violet de Trafford. He was educated at Charterhouse and Pembroke College, Cambridge and the Royal College of Defence Studies.
He married Susan Angela More O'Ferrall, granddaughter of Sir Henry Mather-Jackson, 6th Bt. on 19 July 1974. They have four children:
Lord Beaverbrook was a Lord in Waiting (1986–1988) and the Treasurer of the Conservative Party and the European Democrat Union (1990–1992). He was Chairman of VenTech Healthcare Corporation (1986) and (1988–1992). From 2000 to 2007 he was Chairman of Net Integration Technologies Inc of Toronto, now part of IBM. He is Chairman of Cherif Investment Properties Limited and a Director of Cherif Barnes Development Limited, a property development company. He is a director of Thorn Medical PLC.
In 2004 Lord Beaverbrook was appointed Honorary Air Commodore of 4624 Squadron, Royal Auxiliary Air Force. In 2009 he was promoted to be Honorary Inspector General, RAuxAF, in the rank of Air Vice-Marshal. In May 2016 he was appointed to the new post of Commandant General RAuxAF, with attendance at the Air Force Board.
He is Chairman of the Beaverbrook Foundation and has been a trustee since 1974. In 2003 The Beaverbrook Foundation claimed that 133 valuable paintings in the Beaverbrook Art Gallery given to the gallery by the first Lord Beaverbrook were not donated, but were instead on long term loan from the Beaverbrook Foundation. The paintings were estimated to be worth approximately C$100 million. On 26 March 2007, the arbiter in the case, retired Supreme Court Justice Peter Cory, ruled that 85 paintings donated to the gallery before opening in the 1950s belong to the gallery, but that 48 paintings transferred after the opening belong to the Beaverbrook Foundation. The arbitration ruling was appealed and a settlement was reached in 2010. Another case between the Beaverbrook Canadian Foundation, chaired by Lord Beaverbrook's son, Max, and the Beaverbrook Art Gallery has also been settled.