Jones Quain (pronounced "kwan") (November 1796 – 31 January 1865) was an Irish anatomist, born at Mallow.
At the close of his college career he visited the continental schools and spent some time in Paris, translating and editing Martinet's Manual of Pathology.
Quain came to London in 1825 and joined, as one of its anatomical teachers, the Aldersgate Street school of medicine founded by Frederick Tyrrell.
Quain accepted in 1831 the office of Professor of General Anatomy at University College, then vacant by the resignation of Granville Sharp Pattison; Richard Quain, his brother, acted as senior demonstrator and lecturer on descriptive anatomy, while Erasmus Wilson was his prosector.
He lived in retirement during the last twenty years of his life, and chiefly in Paris, devoting himself to literary and scientific pursuits.