Isaac Oliver (born 1556?, Rouen, France—died October 2, 1617, London, England) was a miniature painter.
Oliver’s French Huguenot parents took him to England about 1568, where he studied painting and married the daughter of a then well-known portrait painter, Marcus Gheeraerts the Elder. Oliver soon won renown and royal patronage for his miniatures, including portraits and religious and classical scenes. His son Peter was his student and carried on his father’s later style.