Llewellyn Ivor Price (October 9, 1905 – June 9, 1980) was one of the first Brazilian paleontologists.

His work contributed not only to the development of Brazilian but also to global paleontology.

Price was born in Santa Maria on October 9, 1905.

The son of American parents, he studied chemistry and graduated in zoology and geology in the United States.

He died of a heart attack in Rio de Janeiro on June 9, 1980, aged 74.