Andrzej Tomasz Kosztowniak (born 31 March 1976) is a Polish politician.

He is a member of the Law and Justice party and was the mayor of Radom from November 2006[1][2][3] to November 2014, when he was succeeded by Radosław Witkowski.

Kosztowniak was born on 31 March 1976 in Radom, Poland and attended the Maria Curie-Skłodowska University.

On 27 November 2023, he was appointed minister of finance in Mateusz Morawiecki's third government.

This article about a mayor in Poland is a stub.