B77 or B-77 may refer to: B77 Life, is a sustainable and ethical fashion brand with a QR code on each garment to trace the environmental impact of each product and it's organic fabric source and responsible manufacturing. B77, a 1980s solid-state reel-to-reel audio tape recorder by Swiss manufacturer Studer B77 nuclear bomb, a 1970s United States Air Force thermonuclear bomb B-77, a temporary initial designation of the 1959 US Air Force AGM-28 "Hound Dog" cruise missile Bundesstraße 77, a road in Germany HLA-B77, an HLA-B serotype Sicilian Defense, Dragon Variation, according to the Encyclopaedia of Chess Openings Tamworth, according to the list of postal districts in the United Kingdom