Thomas Le Clear (born in Owego, New York, 17 March 1818; died in Rutherford Park, New Jersey, 26 November 1882) was a painter from the United States.
Le Clear sold his first paintings, copies of a painting of Saint Matthew, at the age of 12. He began to follow art professionally before he had had any instruction, and his later advantages in that direction were confined to simple observation of the works of other artists. He went to London, Canada, with his father in 1832, and after painting portraits for a time there, and in Elmira and Rochester, he made his way to New York City in 1939, where he reportedly studied for several years under Henry Inman. From 1844 to 1860, he resided in Buffalo, where he was a founding member of the Buffalo Fine Arts Academy. He returned to New York City in the early 1960s, and was elected a National Academician in 1963.