Sir Thomas Manly Deane (8 June 1851 – 3 February 1933) was an Irish architect, the son of Sir Thomas Newenham Deane and grandson of Sir Thomas Deane, who were also architects.
Born at Ferney House, Blackrock, Cork, on 8 June 1851, he was educated at Trinity College, Dublin, and travelled in France and Italy before joining his father's practice in 1878.[1] Deane later went into partnership with his father from 1884 until his father's death in 1899, when he joined Sir Aston Webb.[2] He designed three buildings of note in Dublin: the National Museum and National Library on Kildare Street and also in the 1937 Reading Room in Trinity College Dublin.[3] Deane was knighted in 1911.[4] He died in Wales on 3 February 1933, aged 81.[3]