June Lockhart (known for Lassie and Lost in Space) passed away on October 23, 2025, at the age of 100 in Santa Monica, California. Her long career in film, television, and theater spanned almost 9 decades. Lockhart acted in her first movie when she was 13, in the 1938 MGM classic A Christmas Carol, where she appeared as Belinda Cratchit alongside her real-life parents, Gene and Kathleen Lockhart.
Lockhart has been part of the lives of generations of television viewers as a regular on family TV programs that aired during the 1950s and 1960s. She regularly acted as a loving, trustworthy character, becoming an American icon.
June Lockhart's early life and film debut

June Lockhart was born on June 25, 1925, in New York City to Gene and Kathleen Lockhart, both actors. Being born into a family closely related to acting, she became familiar with stage and film performances in her early years.
Lockhart remained a steady worker in the 1940s since her debut. She starred in movies, including All This and Heaven Too (1940), Sergeant York (1941), Meet Me in St. Louis (1944), and She-Wolf of London (1946). These initial jobs helped her gain experience and exposure in Hollywood during the golden age.
Television success and career highlights

June Lockhart won a Tony Award in 1947 for Best Newcomer for her first Broadway appearance in For Love or Money.
Between 1958 and 1964, she appeared on CBS's Lassie, playing Ruth Martin. Her character resonated with the audience, who interpreted her as the ideal of tranquility and prowess in the family context. She then played another memorable character after Lassie, in the show Lost in Space in 1965-1968 as Dr. Maureen Robinson.
Lockhart appeared on Petticoat Junction from 1968 to 1970 as Dr. Janet Craig. She later was a guest star on numerous popular shows, including Full House, Grey's Anatomy, and The Drew Carey Show.
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