Betty Buckley (born July 3, 1947) is an American actress and singer. Buckley is the winner of a Tony Award, and was nominated for an additional Tony Award, two Daytime Emmy Awards, two Grammy Awards, and an Olivier Award. In 2012, she was inducted into the American Theater Hall of Fame.

Buckley won the 1983 Tony Award for Best Featured Actress in a Musical for her role as Grizabella in the original Broadway production of Cats. She went on to play Norma Desmond in Sunset Boulevard (1994–96) in both London and New York, receiving a 1995 Olivier Award nomination for Best Actress in a Musical, and was nominated for the 1997 Tony Award for Best Actress in a Musical for Triumph of Love. Her other Broadway credits include 1776 (1969), Pippin (1973), and The Mystery of Edwin Drood (1985). From September 2018 to August 2019, she starred as the title role in the U.S. national tour of Hello, Dolly.

Buckley starred in the TV series Eight Is Enough from 1977 to 1981 and played gym teacher Miss Collins in the 1976 film Carrie, before going on to star in the short-lived Broadway musical version of Carrie in 1988, playing Carrie White's mother, Margaret. Her other film roles include Dixie Scott in Tender Mercies (1983), Sondra Walker in Frantic (1988), Kathy in Another Woman (1988) and Mrs. Jones in The Happening (2008). She received a Saturn Award nomination for her role as Dr. Karen Fletcher in the 2016 film Split. Her other television credits include series Oz (2001–03), and Preacher (2018).