Gyula Farkas, Jewish-Hungarian mathematician and physicist (d. 1930)
Farkas Gyula, or Julius Farkas (March 28, 1847 – December 27, 1930) was a Hungarian mathematician and physicist.

He attended the gymnasium at Győr (Raab), and studied law and physics at Pest. After teaching in a secondary school at Székesfehérvár (Stuhlweissenburg), Farkas became in succession principal of the normal school at Pápa, privat-docent (1881) of mathematics at the University of Budapest, and professor of physics (1888) at Franz Joseph University of Kolozsvár (Klausenburg). He worked here up to 1915, when he retired and moved to Budapest.

The Hungarian Academy of Science elected him corresponding member May 6, 1898. He made a contribution to linear algebra with Farkas' lemma, which is named after him for his derivation of it.