​Mark Grenier i​s an actor, improviser, director, and teacher in New York City. He teaches acting and improv at The Barrow Group, The American Comedy Institute, and independently. He has also taught for The Annoyance Theatre, The Peoples Improv Theater, and Magnet Theater, where he also served as school director. Mark has conducted classes, workshops, and professional development seminars for 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.