General Sir Alexander George Montgomery Moore KCB (6 April 1833 – 17 January 1919) was an officer of the British Army.

He was born on 6 April 1833,[1] the son of Alexander James Montgomery Moore of Garvey House, Aughnacloy, County Tyrone, son of Nathaniel Montgomery Moore MP, and his wife Susanna née Matcham, a niece of Lord Nelson.

He served as aide-de-camp to the Commander of the Forces in Ireland (Lord Seaton) from 1856 to 1860, commanded the 4th Hussars from 1868 to 1880, and served as assistant adjutant general for the Dublin district from 1880 to 1885.

[1] Montgomery Moore was married on 30 September 1857 to the Hon.

Jane Colborne, daughter of Lord Seaton.