Juanita Adamina (née Daussat; March 5, 1921 – January 17, 2016), known professionally as Jo de Winter, was an American actress most notable for her role in the short-lived series Gloria.
De Winter was born in Sacramento, California, and her mother died when she was 2 years old. After a brief period when she lived with her father in a hotel in San Francisco, California, she entered a convent school. Her first acting experience came at age 4, when she played an injured shepherd in a Christmas pageant at the school.
She first came to Hollywood when she was under contract with David O. Selznick.
De Winter appeared on Broadway as Mrs. Norman in Children of a Lesser God, and in Europe onstage in One Flew Over the Cuckoo's Nest as Nurse Ratched, a role that she originated in the play's production in San Francisco.
For three years, De Winter had a recurring role as an executive secretary in The Name of the Game. Otherwise, she acted in mostly single-episode appearances on television between 1965 and 2002, including The Alfred Hitchcock Hour, The Brady Bunch, Soap, St. Elsewhere, Newhart, Murder She Wrote, Frasier, The Munsters Today, and The John Larroquette Show. She also appeared in the films Dirty Harry and Breakin' 2: Electric Boogaloo.