Claude Marie Dubuis (March 10, 1817 – May 22, 1895) was a French-born prelate of the Roman Catholic Church.
Dubuis learned English, Alsatian, and Spanish in order to tend his diverse flock.
He served as the second Bishop of Galveston from 1862 to 1892.
Unable to obtain women religious from American communities to care for the many sick and orphaned, he founded the Sisters of Charity of the Incarnate Word.