Pat Birch is an American choreographer. She is the choreographer for Boardwalk Empire. She has worked on the first, second, third and fourth seasons. She has been active since 1971 and has also worked on the films Grease (1978), Grease 2 (1982), Big (1988), and The Stepford Wives (2004) and the series Saturday Night Live and Great Performances. She has twice won the Emmy Award for Outstanding Directing in a Variety or Music Program for Great Performances (1988 and 1992).