Gregory I. Sivashinsky (also known as Grisha) is a professor at Tel Aviv University, working in the field of combustion and theoretical physics.
He finished his master's degree at Moscow State University in 1967 and worked as a research assistant there until 1971.
He was a pupil of Grigory Isaakovich Barenblatt and Yakov Borisovich Zel'dovich.
He completed his PhD at Technion – Israel Institute of Technology in 1973 and worked as a lecturer there for two years.
He joined Tel Aviv University in 1974 and settled there.