The Mitsubishi 2MB1 (service designation 八七式軽爆撃機 Type 87 Light Bomber) was a light bomber produced in Japan in the mid 1920s to equip the Imperial Japanese Army. It was developed in parallel to the 2MB2 but while that aircraft featured an innovative and unorthodox design the 2MB1 was a more conservative approach based closely on the 2MT carrier-based torpedo bomber that was already in production for the Imperial Japanese Navy.
Made by Mitsubishi.
It is the successor of the Mitsubishi B1M .