John M. Slattery Jr. (born August 13, 1962) is an American actor, director, producer and screenwriter. He is best known for his role as Roger Sterling in the AMC drama series Mad Men. He was part of the Mad Men cast that won two SAG Awards. He has also appeared in the movies Iron Man 2 (2010) and The Adjustment Bureau (2011).
Slattery was born in Boston, Massachusetts to an Irish Roman Catholic family. He married actress Talia Balsam in 1998 and together they have a son, Harry.