A. Hasan Mahmud made his international debut for the Bangladeshi cricket team in a T20I against Zimbabwe on March 11, 2020, in Chattogram.

A. Hasan Mahmud represented the Bangladesh Under-19s at the ICC Under-19 Cricket World Cup held in New Zealand in 2018.

A. Hasan Mahmud has played for Bangladesh in two ICC tournaments namely; the ICC T20 World Cup 2022 and the ICC Cricket World Cup 2023.

A. Hasan Mahmud registered his career-best international figures of 5/23 in an ODI against Ireland in Mirpur in March 2023.

A. Hasan Mahmud plays for the Rangpur Riders in the Bangladesh Premier League.