David Krumholtz is an American actor, best known for playing Charlie Eppes on CBS' Numb3rs. Other television credits include Josh Mariner on CBS’ The Good Wife, Gregory on CBS’ Mom, Myron on TBS’ Men at Work, Dr. Jack Habib on HBO’s The Newsroom, and Paul Sobriki on NBC’s ER.

Film credits include Ghost Team, Harold & Kumar Go to White Castle/Escape from Guantanamo Bay/A Very Harold & Kumar 3D Christmas, Sausage Party, Little Men, Casual Encounters, The Judge, This Is the End, Don Juan, Superbad, Walk Hard: The Dewey Cox Story, Bobby, Serenity, Ray, The Santa Clause/2, The Mexican, Sidewalks of New York, 10 Things I Hate About You, Liberty Heights, Slums of Beverly Hills, The Ice Storm, Addams Family Values, and Hail, Caesar!

Broadway theatre credits include his debut as Young Charlie in Conversations With My Father (Royale Theatre).