Susan "Susie" Essman (born May 31, 1955) is an American stand-up comedian, actress, writer and television producer. She voices Sharon and Grandma Quinzel on Harley Quinn.
Outside of the show, she is primarily known for her roles in various television sitcoms, such as Curb Your Enthusiasm (2000-2024) and Broad City (2014-2019). She has also done voice work for various animated films and television shows, voicing Mittens in Bolt (2008) and Mrs. Lonstein in American Dad! (2009-present).