John Gallagher Jr. has made numerous television appearances throughout his career, including guest spots on popular shows such as The West Wing in 1999, Law & Order: Special Victims Unit in 1999, and NYPD Blue in 1993. He also had recurring roles on Ed in 2000, Love Monkey in 2006, and The Flamingo Rising, a Hallmark Hall of Fame film, in 2001.
In addition to his television work, John Gallagher Jr. has appeared in a variety of films, including Pieces of April in 2003, Whatever Works, a Woody Allen comedy, in 2009, and Jonah Hex, a western action film, in 2010. He has also played leading roles in films such as The Heart Machine in 2014, Margaret, a drama written by Kenneth Lonergan, in 2011, and Short Term 12, a drama opposite Brie Larson, in 2013.
John Gallagher Jr. has continued to work in television, starring as Jim Harper in Aaron Sorkin's The Newsroom, which aired on HBO from 2012 to 2014. He also appeared in the HBO mini-series Olive Kitteridge in 2014, based on the Pulitzer-winning novel of the same name, in the role of Christopher Kitteridge.
In recent years, John Gallagher Jr. has appeared in a number of thriller and horror films, including 10 Cloverfield Lane in 2016 and Hush, a horror thriller, in 2005.
