Marie Louise Obenauer (July 17, 1870 – January 7, 1947) was an American pioneer in labor laws for women and children.

[3] Obenauer was the author of numerous brochures, articles and government bulletins on women in industry, conditions of life among wage-earners, and similar subjects.

[3] Obenauer held positions as Chief of Woman's Division, Bureau of Labor Statistics in Washington, D.C., as Chief Woman Administrative Examiner at the National War Labor Board, and Director, Industrial Survey and Research Service in Washington, D.C.

Under the Federal Coal Commission, she served as chief of the division investigating living conditions.

[3] On January 7, 1947, Obenauer died at her home on New Hampshire Avenue in Washington, D.C., at age 76.