SKJ may refer to:
- League of Communists of Yugoslavia (Serbo-Croatian: Savez komunista Jugoslavije)
- Skj (trigraph), used to represent the voiceless postalveolar fricative /ʃ/, in the Norwegian and Faroese languages
- Thakali language, ISO-639 language code
- SKJ Hospital, in Anantnag, Jammu and Kashmir, India