RDJ (disambiguation) explained

RDJ is an initialism commonly referring to the American actor Robert Downey Jr.

RDJ may also refer to:

• Robert Downey Sr. (born Robert John Elias Jr.), American film director and father of Robert Downey Jr.
• Richard D. James, an Irish-born British musician
  • Richard D. James Album, his fourth studio album as Aphex Twin
• Former REDjet airline, ICAO code
• Rio de Janeiro