Morris Fidanque de Castro (February 5, 1902 – December 9, 1966) was the first native Governor of the United States Virgin Islands and a lifetime government servant for the territory.
Immediately after graduating high school, de Castro obtained a job working as a clerk in the island's sanitation office.
Over the years, de Castro remained in government and gradually rose through the ranks until he was appointed as the Commissioner of Finance in 1934.
In 1939, de Castro was briefly made acting governor while Lawrence William Cramer was attending hearings in Washington, D.C..
In 1945, he was made government secretary and held that position until he was appointed full governor by President Harry S. Truman on February 28, 1950.
Almost immediately after his appointment, he signed a law that stiffened penalties and enforcement for discrimination in the territory, largely in response to a growing problem of private "clubs" and resorts which increasingly catered exclusively to mainland whites, rather than locals.