Lieutenant-General Sir Frederick Wellington John Fitzwygram, 4th Baronet DL JP (29 August 1823 – 9 December 1904) was a British Army cavalry officer, expert on horses and Conservative politician.

[1] An elder sister, Augusta Catherine Fitzwygram, married Sir George Baker, 3rd Baronet,[2] and his youngest brother, Loftus Adam Fitzwygram, married Lady Frances Butler-Danvers (sister of John Butler, 6th Earl of Lanesborough).

He purchased the Leigh Park estate, at Havant, in 1874 and developed the grounds and gardens[4] which were frequently thrown open to the public.

Fitzwygram was elected as Member of Parliament for Hampshire South in a by-election in 1884, and when the constituency was restructured, he became MP for Fareham in 1885.

He was an honorary member of the Manchester Unity of Independent Order of Oddfellows, Royal Naval Lodge, England.