Charles Tenney Donworth (February 15, 1892 – June 10, 1976)^[1][2] was a justice of the Washington Supreme Court from September 12, 1949 to December 31, 1967.

Born in Seattle, Washington, to prominent attorney George Donworth, who later became a United States federal judge,^[3] Donworth attended Andover Academy (later called Phillips Academy) in Massachusetts and received an undergraduate degree from Yale University in 1914, followed by a law degree from the University of Washington School of Law in 1916.^[1][4]

Donworth served in the United States Army during World War I,^[1] and "practiced law in Seattle for 33 years".^[5]

On August 29, 1949, Governor Arthur B. Langlie announced the appointment of Donworth to a seat on the state supreme court to succeed retiring justice William J. Steinert.^[4] Following his appointment to the court in 1949, Donworth was re-elected to the seat in 1950, 1956 and 1962, and was also designated chief justice in 1956.^[5] Donworth served on the court until 1968,^[1] having retired effective December 31, 1967, pursuant to a Washington law "requiring the judges to retire at the end of the year in which they become 70".^[5]

In 1918, Donworth married Evelyn Carey,^[3][6] daughter of a prominent Washington judge, with whom he had a son and a daughter. Evelyn died after an illness in 1934, at the age of 41.^[6] Donworth then married Dorothy Lee Griffin of Fresno, California, in 1945.^[7] Donworth died in a hospital in Olympia at the age of 84.^[1]