Sir Arthur Brooke, 1st Baronet PC (Ire) (1726 – 7 March 1785) was an Irish baronet and politician. He was the son of Henry Brooke and his wife Lettice Burton, daughter of . Brooke was educated at Trinity College, Dublin and graduated with a Bachelor of Arts in 1746. He was appointed High Sheriff of Fermanagh in 1752, and became later Governor of County Fermanagh. In 1761, Brooke was elected to the Irish House of Commons for Fermanagh, a seat he held until 1783. Subsequently, he represented Maryborough until his death in 1785. On 3 January 1764, he was created a baronet, of Colebrooke, in the County of Fermanagh and on 15 May 1770, he was invested to the Privy Council of Ireland.