RDJ
The abbreviation RDJ or RdJ stands for:
- Richard David James aka Aphex Twin ( born 1971 ), Irish musician, DJ and label owner
- Robert Downey Jr. (born 1965 ), American actor and singer
- Rio de Janeiro city in Brazil
- Rowing Club 'recommendation Sports Club of Gelehrtenschule of Johanneums in Hamburg
- Disambiguation
- Abbreviation