David Stephen Geoffrey Pollock, 3rd Viscount Hanworth (born 16 February 1946), is a British professor and a Labour elected hereditary peer.

Hanworth was educated at Wellington College and has taken a DPhil degree at the University of Sussex.

[1] A great-grandson of Ernest Pollock, 1st Viscount Hanworth, a former Master of the Rolls, Hanworth succeeded to the viscountcy upon his father's death in 1996 and took his seat in the House of Lords until the House of Lords Act in 1999 removed his automatic right to sit in Parliament.

He chose not to stand in the election by Labour hereditary peers to select two of their number to remain in Parliament after this Act came into force.

They live in London and have two daughters: As they have no sons, Lord Hanworth's titles are expected to pass to a nephew.