Otis Halbert Holmes (born February 22, 1902) was a Republican member of the United States House of Representatives from the state of Washington. He represented Washington’s 4th Congressional District and is recorded as a historical member of Congress. Identified in congressional records by the bioguide ID H000740, Holmes is noted for his service during the mid-twentieth century.

Holmes served as a U.S. Representative from January 6, 1943, to January 3, 1959, completing eight terms in office. Throughout this period, he held the role of Representative for Washington’s 4th District as a member of the Republican Party. His tenure in Congress concluded in 1959, and he is listed as a former officeholder. Further details about his committee assignments, personal life, or activities outside Congress are not provided in the available metadata.