Rexford C. McCullough Loyola University New Orleans James R. Domengeaux (January 6, 1907 – April 11, 1988) was an American lawyer, politician, and judge who served in the United States House of Representatives for Louisiana's 3rd congressional district from 1941 to 1949.

He was a cultural activist of Cajun and Louisiana Creole descent who is best remembered for his efforts to preserve the French language in his native state.

As president of CODOFIL, Domengeaux spearheaded a statewide effort to introduce French education in public classrooms from elementary through high school levels.

In addition to advancing French education, Domengeaux used CODOFIL as a watchdog organization that defended Cajuns from perceived affronts.

For example, Domengeaux crusaded against use of the word "coonass," which he considered an ethnic slur against the Cajun people; and he condemned such Cajun humorists as the popular Justin Wilson, who was born not in Acadiana, but in Tangipahoa Parish, one of the "Florida Parishes" east of Baton Rouge, and who disagreed with Domengeaux politically.