Socialist Youth
- Brazilian Communist Party
- International Union of Socialist Youth
- Scottish Socialist Youth
- Social Democratic Youth (disambiguation)
- Socialist German Workers Youth
- Socialist Workers Youth of Saarland
- Socialist Youth (Chile)
- Socialist Youth (Croatia)
- Socialist Youth (Faroe Islands)
- Socialist Youth (Ireland)
- Socialist Youth (Norway)
- Socialist Youth (Portugal)
- Socialist Youth (newspaper)
- Socialist Youth Austria
- Socialist Youth League (Denmark, 1935)
- Socialist Youth League (Sweden)
- Socialist Youth League (United States)
- Socialist Youth League of Germany
- Socialist Youth Union (Bulgaria)
- Socialist Youth of Spain
- Unified Socialist Youth
- Workers' Youth League (Norway)
- Young European Socialists
- Young Socialists (disambiguation)
- Youth League (disambiguation)