John Montgomery (died 1733) was an Irish MP for County Monaghan, Ireland.
He succeeded his father to the Ballyleck Estate when his elder brother Thomas Montgomery (Irish politician) was disinherited for marrying an Englishwoman.
He was elected MP for County Monaghan, Ireland and sat from November 1727 to August 1733.
[1] He married Mary Coxe, a Maid of Honour to Queen Caroline, wife of King George II of Great Britain.
She died at Beaulieu, County Louth in 1790, aged 97 years.