Dietmar Kolbus (January 17, 1966 – July 22, 2024)[1] was a German chess player who resided in and played for Germany and the Isle of Man.

[2] In October 2014, Kolbus was defeated by Abhijeet Gupta at the start of the Poker Masters Isle of Man International chess tournament.

[3] Kolbus competed in the FIDE Grand Swiss Tournament 2023, where he was the bottom seed.

[4][5] He managed to hold draws against grandmasters Adhiban Baskaran, Adham Fawzy, and Alexandr Fier.

Kolbus died on July 22, 2024 while playing at the Biel Chess Festival 2024.