RJ
RJ or Rj may stand for:
- RJ A Raccoon in the comic strip and feature film Over The Hedge
- Rio de Janeiro Major Brazilian city
- Randy Johnson Major League Baseball Player
- Royal Jordanian airlines, of Jordan (IATA Ariline Designator)
- Registered jack (RJ11, RJ14, RJ45, etc)
- Regional Jet, usually pertaining to aircraft manufactured by Bombardier Aerospace (CRJ), EMBRAER (ERJ), or BAE Systems Avro division (ARJ or RJ)
- Rim Job
- The RC-135 Rivet Joint
- R.J. Reynolds Tobacco Company
- RJ Helton of American Idol
- In Star Trek, Rj is the chemical symbol for element-123, jamesium, named after Richard D. James.
- Raffles Junior College
- Radio Jockey
- Rocket jumping
- An important character from the Over the Hedge comics and the film
- Richard Jefferson, Olympic Bronze Medal Winner and NBA player for the New Jersey Nets
- Robert Jordan American fantasy author