Mark Grenier i​s an actor, improviser, writer, director, and teacher in New York City. He teaches acting, improv, scene study, and film/tv classes at The Barrow Group. He has also taught for the American Comedy Institute, Annoyance Theatre, Peoples Improv Theater, and Magnet Theater, where he also served as training center director. Mark has conducted classes, workshops, and professional development seminars for many schools and organizations, including 20VIC Management, Columbia University, Fairfield University, The Fulbright Association, Kaye Scholer LLP, Marymount Manhattan College, The New York Film Academy, The North Highland Company, The University of Pittsburg, Zegna, and more. He is currently completing an MFA in Cinema Arts at the Graduate School of Cinema at Brooklyn College.