6B or 6b or VI-B may refer to: Keratin 6B, a type II cytokeratin Oflag VI-B, a World War II German POW camp for officers located SW of the small town Dössel REL-6B Radar, a ground air surveillance and guidance radar Rumpler 6B, a 1916 German single-engine floatplane fighter Season 6B, a popular fan theory related to the long-running British science fiction television series Doctor Who Stalag VI-B, a Nazi World War II camp for prisoners of war TUIfly Nordic IATA airline designator British Rail Class 203 Diesel-electric Multiple Units, which were classed as 6B (6 coaches, buffet) pre-TOPS "6B" (Fringe), an episode of the television series Fringe 6b/8b encoding, six-bit codes in telecommunications Supermarine S.6B, a British racing seaplane HAT-P-6b, a transiting extrasolar planet Northrop Grumman EA-6B Prowler, an American, twinjet all-weather attack aircraft 6B, the production code for the 1982 Doctor Who serial Earthshock
See also B6 (disambiguation)