Albert Edward Handcock, 5th Baron Castlemaine (26 March 1863 – 6 July 1937),[1] styled The Honourable from 1869 to 1892, was an Irish peer.

[2] Born at East Hill, Athlone, he was the second son of Richard Handcock, 4th Baron Castlemaine and his wife Hon.

[2] Handcock was educated at Eton College and went then to Christ Church, Oxford, where he graduated with a Bachelor of Arts in 1895.

[3] Handcock served in the British Army as lieutenant of the 4th Royal Inniskilling Fusiliers.

[3] Handcock died, aged 74 at London and was succeeded in the barony by his younger brother Robert.