Tamás Szonyi (born July 23, 1957, Budapest) is a Hungarian mathematician, doing research in discrete mathematics, particularly finite geometry and algebraic coding theory.
He is full professor at the Department of Computer Science of the Eötvös Loránd University, Budapest, vice director of the Institute of Mathematics, and vice chairman of the Mathematical Committee of the Hungarian Academy of Sciences.
In 2001, he received the Doctor of Science title from the Hungarian Academy of Sciences.
Szonyi created a successful school in finite geometry.
He has done influential work on blocking sets
and the polynomial method.