Gertrude L. Thebaud was an American fishing and racing schooner built and launched in Essex, Massachusetts in 1930. A celebrated racing competitor of the Canadian Bluenose, it was designed by Frank Paine and built by Arthur D. Story for Louis A. Thebaud, and named for his wife, Gertrude Thebaud. In their first meeting at Gloucester, Massachusetts in October 1930, Gertrude L. Thebaud bested Bluenose 2-0 to win the Sir Thomas Lipton International Fishing Challenge Cup. However, in 1931, two races to none, and again in 1938, three races to two, Bluenose defeated Gertrude L. Thebaud to remain the undefeated holder of the International Fisherman's Trophy. During World War II, the schooner saw service with the United States Coast Guard. The vessel sank in 1948 off the coast of Venezuela.