The Huff-Daland XB-1 was a prototype bomber aircraft built for the United States Army Air Corps.

The XB-1's gunnery arrangement was new for an American bomber, but it had been previously used by the British and the Germans during World War I.

Three other similar aircraft designs were requested by the Army Air Corps around the same time which competed against the XB-1 for the contract.

Of these three (the XB-2 Condor, the Sikorsky S-37 and the Fokker XLB-2), the Curtiss model eventually won, and only a single XB-1 was ever produced.

Related development Aircraft of comparable role, configuration, and era