8B

8B or VIII-B may refer to :
* AV-8B Harrier II, an aircraft
* Renault 8B, a liquid-cooled V-8 aero engine
* Stalag VIII-B, a notorious German Army prisoner of war camp near Lamsdorf
* Caribbean Star Airlines IATA airline designator

8b may refer to :
* 8 bits, like in 8b/10b encoding or 6b/8b encoding
* Bone morphogenetic protein 8b
* Van Biesbroeck 8b, a brown dwarf star
* WASP-8b, an extrasolar planet discovered in 2008