Leander Ditscheiner (4 January 1839 – 1 February 1905) was an Austrian physicist and mathematician, best known for his research on birefringence.
Leander Ditscheiner was born 1839 in Vienna. He studied at the University of Vienna and later at the Heidelberg University. He received his Ph.D. in 1857 and became lecturer at the TU Wien in 1866. In the later years he became assistant professor and full professor in 1883.