Hagop Panossian (Armenian: Յակոբ Փանոսեան; born 8 June 1946) is an Armenian aerospace engineer, academic and philanthropist with over 30 years of experience in rocket engine control and modeling, large space structures, actuation systems, failure detection, stochastic systems, vibration damping and optimal and adaptive control.

For five years, Panossian taught mathematics and sciences at the Calousd Gulbengian Secondary School, before moving to the United States at the age of 28.

[12] In 1992, he founded the ARPA Institute (Analysis, Research & Planning for Armenia) and continues to serve as its president, coordinating lectures, invention competitions, awards and other programs.

The Institute promotes international cooperation between the Republic of Armenia and the Armenian diaspora through consulting, analysis and research across various fields including education, economics, medicine, law, history and technologies.

Additionally, he organizes, through ARPA, an annual invention competition for young Armenian scientists and monthly lectures and/or panel discussion in Los Angeles, featuring specialists in various fields.