Lev Matveevich Zelenyi (Russian: Лев Матвеевич Зелёный, born August 23, 1948) is a Soviet and Russian physicist, an expert in the field of space plasma physics, the physics of solar-terrestrial relations, nonlinear dynamics and planetary research.
His main area of scientific activity is the physics of space plasma.
In 1972 he graduated from the Department of Aerophysics and Space Research of the Moscow Institute of Physics and Technology.
He began to study physics of space plasma under the supervision of Albert Galeev.
In January 2012 following the reentry of the Fobos-Grunt spacecraft, Zeleny proposed a repeat mission called Fobos-Grunt 2, on behalf of mission scientist Alexander Zakharov.