Sir Richard Ros (born 8 March 1429), was an English poet, the son of Sir Thomas Ros, lord of Hamlake (Helmsley) in Yorkshire and of Belvoir in Leicestershire. In Harl. manuscript 372 the poem of "La Belle Dame sanz Mercy," first printed in William Thynne's Chaucer (1532), has the ascription "Translatid out of Frenche by Sir Richard Ros." "La Belle Dame sanz Mercy" is a long and rather dull poem from the French of Alain Chartier, and dates from about the middle of the 15th century. It is written in the Midland dialect, and is surprisingly modern in diction. Records last mention him in 1492.