Nanette June Leslie (June 4, 1926 – July 30, 2000) was an American actress. She was known for playing Martha McGivern in the American western television series The Californians.^[1]

Leslie was born in Los Angeles, California, the daughter of Frank Leslie, a salesman, and his wife, Alma.^[3] Leslie attended University High School.^[3] She began her career in 1945 in the film Under Western Skies. Leslie starred, co-starred and appeared in other films such as Guns of Hate, The Devil Thumbs a Ride, Under the Tonto Rim, Sunset Pass, The Miracle of the Hills, Western Heritage, The Arizona Ranger, Wild Horse Mesa and I'll Remember April.^[2][4]

Between 1949 and 1955 Leslie appeared in eight episodes of The Lone Ranger; the most appearances in the series by any actress.^[1] She played Faith Harding in four episodes of The Gene Autry Show, 1950–1955. In 1954, Leslie guest-starred in the western television series Annie Oakley.^[1][5] She also guest-starred in The Adventures of Kit Carson and The Cisco Kid, appearing in five episodes of each.^[1] Leslie later joined the cast of the western television series The Californians, playing Jack McGivern's wife Martha McGivern from 1957 to 1958.^[1][5] Leslie retired in 1968, her last credit being for the film The Bamboo Saucer.^[6]

Leslie died in July 2000 from complications of pneumonia in San Juan Capistrano, California, at the age of 74.^[7] She was buried in Pacific View Memorial Park.^[2]