Sir Oswald Mosley, 5th Baronet

Sir Oswald Mosley, 5th Baronet (29 December 1873 – 21 September 1928), was a British Army officer, aristocrat and the father of Oswald Mosley, leader of the British Union of Fascists (BUF). He gained the rank of Captain in the 1/1st Derbyshire Yeomanry and served in Egypt during the First World War until invalided in 1916.

Mosley became estranged from both his wife and his father, the latter describing him as a "gloomy blackguard". His wife's family, the Heathcotes, thought of him as an "ogre".

He died at his residence, Hilton Lodge, near Derby, on 21 September 1928. His will was proven by probate at the Derby District Registry; his estate valued at £5000, which he left to his ageing mother and sister. Their marriage was an unhappy one. with issue; and secondly the Hon. Diana Mitford, the daughter of Lord Redesdale, with issue.

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