Robert Davy (died 28 September 1793) was an English portrait painter.
Davy was born at Cullompton, Devonshire, and began art as a portrait-painter, going, when young, to Rome to educate himself.
About 1760 he returned to England, and settled in London as a drawing-master at a ladies' school in Queen Square; subsequently he was appointed under drawing-master to the Royal Military Academy at Woolwich.
He resided in the latter portion of his life in John Street, Tottenham Court Road; in September 1793 he was returning home one night when he was knocked down and robbed near his own door, and died after a few days on 28 September.
A portrait by him of John Arnold, watchmaker, was engraved in mezzotint by Susan Esther Reid.