Lucie Désirée Arnaz (born July 17, 1951) is an American actress, singer, dancer and producer. She is the daughter of actors Lucille Ball and Desi Arnaz, and is the sister of actor Desi Arnaz, Jr..
Born and raised in Los Angeles, Arnaz attended the Roman Catholic Immaculate Heart High School.
Having had one walk-on part in her parents' television series I Love Lucy and on Lucille Ball's second TV series The Lucy Show, Arnaz made her first acting appearance in a continuing role in the series Here's Lucy from 1968 to 1974. She played Kim Carter, the daughter of the eponymous Lucy—who was played by Arnaz's real-life mother, Lucille Ball.