Abdias Treu (sometimes spelled Trew) (29 July 1597 – 12 April 1669) was a German mathematician and academic. He was the professor of mathematics and physical science at the University of Altdorf from 1636-1669. He is best known for his contributions to the field of astronomy.[1] He also contributed writings on the mathematical nature of music theory.[2] He is the grandfather of physician and botanist Christoph Jacob Treu.[3]