István Csom (2 June 1940 – 28 July 2021[1]) was a Hungarian chess player who held the FIDE titles of Grandmaster and International Arbiter.

His tournament victories include Olot 1973, Cleveland 1975, Olot 1975, Pula Zonal 1975, Berlin 1979, Copenhagen 1983, Järvenpää 1985 and Delhi 1987.

Csom was born in Sátoraljaújhely, Hungary.

Over the course of his career, Csom defeated many top Grandmasters, including Ulf Andersson, Boris Gulko, Tony Miles, Lajos Portisch, Samuel Reshevsky, Nigel Short, former World Champion Mikhail Tal, Rafael Vaganian, and Artur Yusupov.

This biographical article relating to a Hungarian chess figure is a stub.