Mark Armstrong is a Brooklyn-based director and the Director of New Work for off-Broadway’s Keen Company. As Artistic Director of The Production Company, he directed the company's premiere productions of Dan O’Brien’s The Angel in the Trees, Blair Singer’s Meg's New Friend and The Most Damaging Wound, Stephen Belber's Melbourne, Elizabeth Meriwether's The Sound in the Throat, Beau Willimon's I Am Ned Kelly, Alan Berks' Goats (NY Premiere), Ben Ellis' Falling Petals (US Premiere) and Beneath Us, Patricia Cornelius' Love (US Premiere), Ross Mueller’s Pinter’s Explanation and Brendan Cowell's 967 Tuna. Additionally, he oversaw productions of 31 new plays, including new work by Kate Moira Ryan, Michael John Garcés, Betty Shamieh, Brett C. Leonard, Courtney Baron, Brett Neveu, Lally Katz and many others. 

Other directing credits over 12 years in New York include new plays by Christopher Shinn, Stephen Adly Guirgis, Elizabeth Meriwether, Jason Grote, Anton Dudley, Trista Baldwin, Suzanne Bradbeer, Edith Freni, the New York Neo-Futurists and many others. Before coming to New York, he was a director with Dark Horse Theatre Company in his native Minnesota, where he directed Fat Men in Skirts, The Food Chain, Private Eyes, Five Women Wearing the Same Dress and Orphans. He is a member of the Stage Directors and Choreographers Society, Lincoln Center Theater Directors Lab and Ensemble Studio Theatre.