Sir Thomas Wallace Russell, 1st Baronet MP PC (Ire) (28 February 1841 – 2 May 1920), was an Irish politician and agrarian agitator.

However, he opposed William Ewart Gladstone's Home Rule policy and was elected to the House of Commons of the United Kingdom of Great Britain and Ireland as a Liberal Unionist in 1886 for South Tyrone.

However, Russell's views on Home Rule underwent a change around the turn of the century and he gradually became a critic of Unionist policies in Ireland.

[6] Russell does not appear to have contested the December 1910 general election, but in 1911 he won a by-election in Tyrone North, a seat he held until the constituency was abolished in 1918.

[6] Russell was sworn of the Irish Privy Council in 1908 and created a Baronet, of Olney in the County of Dublin, in 1917.