Rb

RB or Rb may stand for:
 * the chemical element Rubidium.
 * The Nissan RB engine
 * the IATA code for Syrian Arab Airlines.
 * the Retinoblastoma protein, found mutated in many cancers, including retinoblastoma cancer.
 * RB, the name used for a series of buses manufactured by Hyundai Motor Company.
 * an abbreviation for right back, a defensive position in football (soccer).
 * an abbreviation for running back, an offensive position in football (American).
 * Radio Bremen, a German broadcasting station in Bremen.
 * re-entry body (US Navy term for re-entry vehicle, rv)
 * Rehoboth Beach, Delaware
 * Road bike
 * The Ruby programming language's typical filename extension, .rb
 * .rb is also the extension associated with Rocket Ebook files.
 * Rolls-Barnoldswick, one of the design and production sites for Rolls-Royce jet engines
 * Rafael Benitez Liverpool manager
 * Rancho Bernardo, a community in northern San Diego

RB RB RB RB RB RB RB RB (Watt ėßß datt?) RB Rb RB