The Mitsubishi 2MR was a Japanese reconnaissance aircraft developed in the early 1920s and introduced in 1923. The 2MR was a biplane designed by Herbert Smith, an Australian engineer working for Mitsubishi. The aircraft was used by the Imperial Japanese Navy for maritime reconnaissance. It had an open cockpit for a crew of two and was equipped with a range of cameras for aerial surveillance. The 2MR had a wooden structure with fabric covering and was powered by a water-cooled Hispano-Suiza 8Aa engine.
Despite its relatively short service life, the Mitsubishi 2MR contributed to the development of Japan's naval aviation capabilities in the interwar period. The aircraft participated in various exercises and training missions, laying the groundwork for future advancements in Japanese military aviation.