Jaan Sarv (Võro: Sarvõ Jaan; 21 December 1877 – 23 August 1954) was an Estonian mathematician and educator. Most of his life he worked as a professor at the University of Tartu. Sarv laid the foundation of Estonian language mathematical education.
"Eesti koolimatemaatika ajalugu" I-IV, Olaf Prinits, Tartu, 1992–1994