Mohd Zin bin Bidin was born on 27 May 1954 in Cheras, Selangor, Federation of Malaya (now Malaysia).

On 11 November 1983, Mohd Zin was commissioned as a Captain in the Royal Medical and Dental Corps by His Majesty the Yang di-Pertuan Agong.

In addition to serving on the Scientific Council of the International Committee of Military Medicine and the International Advisory Committee of the Journal of Military and Veterans Health Australia, Mohd Zin was the Founding Chairman of the National Sports Institute.

Later, he was served as the acting National Chief Scout of Malaysia after Shafie Salleh's death on 11 September 2019.

After some consideration by President Anwar Ibrahim, he appointed Mohd Zin as the 7th National Chief Scout of Malaysia on 2023.