Aleksandr Nikolayevich Korkin (Russian: Александр Николаевич Коркин; 3 March [O.S. 19 February] 1837 – 1 September [O.S. 19 August] 1908) was a Russian mathematician. He made contribution to the development of partial differential equations, and was second only to Chebyshev among the founders of the Saint Petersburg Mathematical School. Among others, his students included Yegor Ivanovich Zolotarev.