Kathryn McKinnon Berthold (born January 6, 1984), known professionally as Kate McKinnon, is an American actress, comedian, and impressionist who is best known as a regular cast member on Saturday Night Live and The Big Gay Sketch Show, and for playing the role of Dr. Jillian Holtzmann in the 2016 Ghostbusters reboot.
McKinnon is known for her character work and celebrity impressions of pop singer Justin Bieber, comedian television host Ellen DeGeneres, and political figures Hillary Clinton, Kellyanne Conway, Elizabeth Warren, Betsy DeVos, Ruth Bader Ginsburg, and Jeff Sessions. She has been nominated for five Primetime Emmy Awards; one for Outstanding Original Music and Lyrics and four for Outstanding Supporting Actress in a Comedy Series, winning in 2016 and 2017.
Kathryn McKinnon Berthold was born and raised in the Long Island town of Sea Cliff, New York. She is the daughter of Laura Campbell, a parent educator, and Michael Thomas Berthold, an architect. She has a younger sister, Emily. Her father died when she was 18 years old.