James Hennessy, 2nd Baron Windlesham

James Bryan George Hennessy, 2nd Baron Windlesham (4 August 1903 – 16 November 1962) was a British peer and decorated British Army officer.

Biography James Bryan George Hennessy was the first son of George Hennessy, 1st Baron Windlesham. He was educated at Eton College and the Royal Military College, Sandhurst. He was commissioned into the British Army as a second lieutenant on 30 August 1923. He served in the Grenadier Guards during the Second World War, before retiring from the army in 1948 with the rank of brigadier.

He joined the House of Lords in 1953, having succeeded as Baron Windlesham on the death of his father. As for his politics, he was described as a "Liberal Peer of Conservative leanings". He was killed in a helicopter crash at sea off the coast of St David's Head, Wales on 16 November 1962: his body was not recovered. He was succeeded by his son (David Hennessy, 3rd Baron Windlesham). and made a Commander of the Order of George I by Greece.