William Willard was an American painter.
Willard was the son of a blacksmith and was first trained as a jeweler, but was more interested in drawing. From 1841 to 1867 he worked as a painter in Boston. In 1867 he returned to Sturbridge where he set up a studio on his property to receive sitters for portraits. His most famous work is his portrait of Lincoln that became a model for the Lincoln Penny.

Willard died in Worcester. His studio and its contents were bequeathed to his friend Stephen Salisbury III who in turn left them to the Worcester Art Museum.

Personal life
Willard was the son of Seth Willard (1782–1843) and his wife, Susan (née Fay) Willard (1782–1876). His 4th great-grandfather was Edmund Rice, an early settler to the Massachusetts Bay Colony. His second cousin, Henry Clinton Jaynes (1827–1905), was the great-grandfather of actor Henry Fonda.