Juliet Maryon Mills is an English actress. She is the daughter of actor Sir John Mills and Mary Hayley Bell and the sister of actress Hayley Mills.
Juliet Mills began her career as a child actress. She was nominated for a Tony Award for her stage performance in Five Finger Exercise in 1960. She progressed to film work, and then to television, playing the lead role in the sitcom Nanny and the Professor in 1970-71. She received Golden Globe nominations for her work in this series and for her role in the film Avanti! in 1972. She won an Emmy Award for her performance in the television miniseries QB VII.
From 1999 until 2008, she had a continuing role in the daytime drama series Passions, for which she was nominated for a Daytime Emmy Award.