Jehu Amaziah Orr (May 10, 1828 – March 10, 1921) was a Confederate politician who served in the Confederate States Congress during the American Civil War.
He earned his Bachelor of Arts from Princeton University in 1849 and later returned to receive a Master of Arts in 1857.
Orr was born in Anderson County, South Carolina. He was the younger brother of James L. Orr. He later moved to Mississippi, where he was a member of the state legislature in 1852. He later represented the state in the Provisional Confederate Congress and the Second Confederate Congress. After the war he served as a state court judge from 1870 to 1876.
He died at the home of his daughter, suffragist and educator Pauline Van de Graaf Orr, in New York on March 10, 1921.