Thomas van der Mars (born 15 November 1990) is a Dutch professional basketball player who last played for Heroes Den Bosch of the BNXT League.

[4] Van der Mars had a successful season, as he claimed KML Most Valuable Player and All-KML Team honors on his way to the league finals.

[6] On 4 July 2018, Van der Mars signed with Crelan Okapi Aalstar of the Belgian Pro Basketball League (PBL).

[7] On 30 July 2019, van der Mars returned to the Netherlands by signing a three-year contract with New Heroes Den Bosch of the Dutch Basketball League (DBL).

[8] On 29 May 2022, he won his first national title with Den Bosch and was named the BNXT Dutch Finals MVP after averaging 11.4 points and 9.4 rebounds in the series against ZZ Leiden.