Christine Ebersole (born February 21, 1953) is an American actress, singer and comedian. She has appeared in film, television, and on stage. She starred in the Broadway musicals 42nd Street and Grey Gardens, winning two Tony Awards. In 1984, she appeared as Caterina Cavalieri in the Academy Award, BAFTA Award, Golden Globe Award, and Directors Guild of America Award-winning period biographical drama film Amadeus.

She has co-starred on the TBS sitcom Sullivan & Son, in which she played Carol Walsh, and earned an Emmy Award nomination for her work in One Life to Live. She is also known for her recurring roles as Ms. Newberg on Royal Pains and White Diamond in the Steven Universe franchise. Since 2019, she has played the role of Dottie on Bob Hearts Abishola.