HJ
Look up hj in Wiktionary, the free dictionary.
HJ may refer to:
Science, technology, and mathematics
- Hall–Janko group, a mathematical group
- U.S. code for a cryptographic key change; see cryptoperiod
Other uses
- ⟨hj⟩, a two-letter combination used in some languages
- /hj/, a pronunciation cluster, sometimes reduced
- Holden HJ, an Australian car 1974-1976
- Hajji (Hj.), an Islamic honorific
- hic jacet ('here lies'), Latin phrase on gravestones
- Hilal-i-Jurat, post-nominal for Pakistan honour
- Hitler-Jugend (Hitler Youth)
- Tasman Cargo Airlines, IATA airline designator
- Handjob