June Lockhart, ‘Lassie’ and ‘Lost in Space’ actress, dead at 100

June Lockhart, the beloved actress best known for “Lassie” and “Lost in Space,” has reportedly died at the age of 100.

The actress died on Thursday at 9:20 p.m. in Santa Monica, Calif., People confirmed on Saturday.

According to the outlet, Lockhart reportedly died of natural causes, and her daughter June Elizabeth and granddaughter Christianna “were by her side when she died.”

The family is requesting donations to The Actors Fund, International Hearing Dog, Inc., and ProPublica in lieu of flowers.

Funeral services for the actress will reportedly be private.

A New York City native, Lockhart was born in the Big Apple in 1925 to actors Gene and Kathleen Lockhart.

She made her film debut in 1938’s “A Christmas Carol” as Belinda Cratchit, the daughter of Bob Cratchit, at the age of 13 — a role she played opposite her parents, who played Cratchit and his wife in the iconic film.

She also appeared in the Christmas-themed “Meet Me in St. Louis” in 1944, opposite Judy Garland and Vincente Minnelli.

Taking over for Cloris Leachman, who died in 2021, Lockhart was cast as Ruth Martin in the beloved TV series “Lassie” in 1958.

She would go on to play the role until 1964 — and she was nominated for an Emmy for her work in the series in both 1953 and 1959.

Lockhart subsequently appeared in the TV series “Lost in Space” in 1965, and continued appearing on the show until 1968.

“I applied my own maternal instinct in both of these shows,” she told Boomer magazine in June, amid her 100th birthday.

“I am that lady who talks it through if there is a problem and comforts if someone is upset.”

When asked if she had any professional regrets amid her lengthy career, she called herself fortunate.

“My philosophy has always been the ‘right things’ will come to you,” she told the outlet. “I am lucky that I was able to work with so many talented actors and directors.”

Lockhart welcomed two daughters, Anne and June, with her first husband John F. Maloney. The former couple was married from 1951 to 1959.

The prolific stage, TV and film actress subsequently married architect John Lindsay in 1959 before divorcing him in 1970.