Dr. Mohammad Ali Modjtahedi Gilani (Persian: محمدعلی مجتهدی گیلانیcode: fas promoted to code: fa ; 23 September 1908 – 1 July 1997) was an Iranian University professor and lifetime principal of the highly prestigious Alborz High School in Tehran, Iran.

Memoirs of Mohammad-Ali Modjtahedi (Persian) 2000 were published as part of Harvard University's Iranian Oral History Project, editor Habib Ladjevardi.

ISBN 964-7359-10-1 He was born in Lahijan, Gilan in the northern part of Iran.

He finished high school at Madrese-ye Motavassete in the eastern part of Tehran and received his high school diploma in 1931.

He completed his undergraduate studies at the Université Lille Nord de France in 1935 and his doctorate at the Paris-Sorbonne University in Mechanical Engineering in 1938.