PBW

PBW may refer to:


 * Philadelphia-Baltimore-Washington Stock Exchange
 * Peanut Butter Wolf, American hip hop record producer
 * Proton beam writing, a lithography process
 * Play by Web, Play-by-post role-playing game
 * Prosopography of the Byzantine World, a prosopographical database project
 * Poincaré-Birkhoff-Witt theorem, a result in mathematics