June Lockhart: Lost in Space and Lassie Star Dies at 100

June Lockhart was an American actress best known as the warm, level-headed mothers of 1960s television: Ruth Martin on Lassie and Dr. Maureen Robinson on Lost in Space. Born on June 25, 1925, in New York City, she was the daughter of actors Gene and Kathleen Lockhart and made her film debut at age 13.

Lockhart made her film debut in A Christmas Carol (1938) alongside her parents and received a Special Tony Award in 1948 for the Broadway play For Love or Money. She played Ruth Martin on Lassie from 1958 to 1964 and Maureen Robinson on Lost in Space from 1965 to 1968. In 2013 she received NASA's Exceptional Public Achievement Medal for inspiring public interest in space exploration.

Lockhart had two daughters, including actress Anne Lockhart, and never remarried after her second divorce. She died of natural causes in her sleep at her home in Santa Monica, California, on October 23, 2025, at age 100. Remembered as a gracious pioneer of television's golden age, she inspired generations of viewers to look to the stars.

Achievements: Made her film debut in A Christmas Carol (1938), won a Special Tony Award for For Love or Money (1948), starred in Lassie and Lost in Space (1958-1968), received NASA's Exceptional Public Achievement Medal (2013).

Birth: June 25, 1925 - New York City, New York.

Profession: Actress.

Interesting Facts: June and her daughter Anne played the same character at different ages on Magnum, P.I. in 1981. She donated her Tony Award to the Smithsonian's National Museum of American History in 2008.