Claude Marie Dubuis (March 10, 1817 – May 22, 1895) was a French-born prelate of the Roman Catholic Church.

After studying Latin, Greek, and French grammar for eight months, he entered a minor seminary in Saint-Jodard, where he passed all of his courses.

In late 1846, Dubuis sailed with several other recruited priests from Le Harve in France to New Orleans.

After arriving in Louisiana in early 1847, he was sent to learn English at the St. Mary's of the Barrens seminary in Perryville, Missouri.

At first, Dubuis was not sufficiently conversant in Spanish to administer the last rites, Odin stayed in San Antonio until a Spanish-speaking priest arrived to assist him.

Bishop Odin, who was recommending Dubius as his replacement, left for Europe that year to get Vatican approval of austerity measures he wanted to enact on the archdiocese.

On one trip to Europe, he secured the services of the Congregation of the Resurrection to minister to the Polish community in Texas.

[11] Dubuis founded the Sisters of Charity of the Incarnate Word, a community that came to play a significant role in the provision of healthcare services in Texas.

[12][13] In 1873, at Dubuis' request, the Sisters of Notre Dame de Namur in Lockport, New York established the Academy of the Sacred Heart for girls in Waco, Texas.

As early as 1870 Dubuis, began sending Father Vincent Perrier twice a year to visit Fort Worth, Texas.

[9] Suffering from poor health, Dubuis left Galveston in 1881 to permanently return to France, settling at Vernaison in the Metropolis of Lyon.

Pope Leo XIII accepted his resignation as bishop of Galveston on December 16, 1892, and named Dubuis titular archbishop of Arca in Armenia.

[2] In retirement, Dubuis assisted Cardinal Pierre-Hector Coullié, the bishop of Lyons, in episcopal work.