Gary J. Feldman is an American particle physicist who works on neutrino physics with the NOvA experiment based at Fermilab.

His father immigrated from Poland to the United States as a child shortly after World War I. Feldman's father attended college at the City University of New York and received his medical training at the University of Basel.

[1] Feldman developed an interest in physics in high school after attending an open house at the University of Notre Dame.

He was a co-spokesperson for the NOvA experiment at Fermilab from its design to early data-taking phases, spanning 11 years.

Professor of Science, Emeritus at Harvard and continues work on the NOvA experiment.