Sir Richard Harington, 12th Baronet, JP, DL (3 March 1861 – 1 February 1931) was a British barrister and judge.
Called to the Bar in 1886, he practised as a barrister on the Oxford Circuit before taking up an appointment as a puisne judge in the High Court of Judicature at Fort William in 1899, where he served in that capacity until returning home in 1913.
He was promoted to the rank of Chief Petty Officer in the Anti-Aircraft Corps, in which capacity he served until 1916.
Selina Louisa Grace, daughter of Charles Saunders Dundas, 6th Viscount Melville, in 1899.
He was succeeded by his elder son, Richard Dundas Harington, who became the 13th Baronet.