Metwally has also worked extensively on stage, appearing in the world premiere of Rajiv Joseph's "Guards at the Taj" at the Atlantic Theater in 2015 where he also received an Obie Award for Outstanding Performance. He was seen in 2005 as "Aram" in Beast on the Moon directed by Larry Moss, and received a 2004 Tony Award nomination for his work in Sixteen Wounded. He has worked with the New York Arab-American Comedy Festival, first as an actor and then as a Director. He has also appeared at theaters around the country, including Steppenwolf, The Public, the Long Wharf, Berkeley Rep, and many others.