Ramsay Richard Reinagle RA was an English portrait, landscape, and animal painter, and son of Philip Reinagle.

Ramsay Richard Reinagle was a pupil of his father Philip Reinagle, whose style he followed, and he exhibited at the Royal Academy as early as 1788. He afterwards went to Italy, and was studying in Rome in 1796. Subsequently, he visited Holland in order to study from the Dutch masters. After his return home he painted for a time at Robert Barker's panorama in Leicester Square, and then entered into partnership with Thomas Edward Barker, Robert's eldest son, who was not himself an artist, in order to erect a rival building in the Strand. They produced panoramas of Rome, the Bay of Naples, Florence, Gibraltar, Bay of Gibraltar, and Paris, but in 1816 disposed of their exhibition to Henry Aston Barker and John Burford.

In 1805 Reinagle was elected an associate of the Society of Painters in Watercolours, and in 1806 a member. He became its treasurer in 1807, and was president from 1808 to 1812 Between 1806 and 1812 he sent to its exhibitions sixty-seven drawings, mostly Italian landscapes and scenery of the English lakes. During the same period he exhibited portraits and landscapes in oil at the Royal Academy, of which he became an associate in 1814, and an academician in 1823. He was a clever copyist of the old masters, and is said to have been much employed by a picture-dealer in restoring and "improving" their works.

In 1848 he sent to the Royal Academy exhibition as his own work a small picture of Shipping a Breeze and Rainy Weather off Hurst Castle painted by a young artist named J. W. Yarnold, which he had purchased at a broker's shop, and to which he had made some slight alterations. Attention was called to the deception, and a full inquiry made by the academy resulted in his being called upon to resign his diploma as a royal academician. In 1850 he unsuccessfully endeavoured to exculpate himself in two letters published in the Literary Gazette.

He continued to exhibit at the academy until 1857, but in his later years sank into poverty, and was assisted by a pension from the funds of the academy. He died at Chelsea on 17 November 1862.