Frederick Montagu may refer to:
Frederick Montagu (MP, born 1733) (1733–1800), British member of parliament (MP) for Northampton, and for Higham Ferrers Lord Frederick Montagu (1774–1827), British politician, Postmaster General and MP for Huntingdonshire
See also Fred Montague (1864–1919), English film actor Fred Montague, 1st Baron Amwell (Frederick Montague, 1876–1966), British politician, MP for Islington West