Lorna Elizabeth Lockwood (March 24, 1903 – September 23, 1977) was an American lawyer and judge who served as justice (and at times chief justice) of the Arizona Supreme Court.
Born in what was then Arizona Territory, Lockwood was the daughter of Alfred Collins Lockwood, who later served as chief justice of the Arizona Supreme Court.
Lockwood attended the University of Arizona and the University of Arizona College of Law before entering private practice and serving several terms in the Arizona House of Representatives.
Lockwood spent a decade on the bench of the Arizona Superior Court in Maricopa County, the first woman to serve in that role.
In 1960, Lockwood was elected to the Arizona Supreme Court.
She served as chief justice from 1965 to 1966 and 1970 to 1971, become the first female chief justice of a state supreme court in the United States.
She retired from the court in 1975 and died three years later.