Thomas Orlando Lyttelton, 3rd Viscount Chandos, Baron Lyttelton of Aldershot (born 12 February 1953), is a British hereditary and life peer and politician for the Labour Party.

[1] A member of the Lyttelton family, Chandos is the elder son of Antony Lyttelton, 2nd Viscount Chandos and Caroline Lascelles, a daughter of Sir Alan Lascelles (Private Secretary to both King George VI and Queen Elizabeth II).

[2] He initially sat on the Social Democratic Party (SDP) benches, but when the party merged with the Liberals in 1988 he elected to become a member of the anti-merger 'continuing' SDP, led by David Owen, instead.

When the 'continuing' SDP collapsed a year later he decided to join the Labour Party, rather than defect to the Conservatives as many of his colleagues in the SMF did.

[2][5] Chandos married Arabella Sarah Lucy Bailey, daughter of John Adrian Bailey and Lady Mary Baillie-Hamilton, on 19 October 1985.