UJC might refer to:
- Uzbekistan-Japan Center, a nongovernmental organization in Uzbekistan
- United Jewish Communities, an American Jewish umbrella organization
- Unión de Jóvenes Comunistas, Cuban political youth organisation
- Union de la jeunesse congolaise, a Congolese youth organisation
- União dos Jovens Comunistas, formerly the youth wing of the Portuguese Communist Party
- United Jihad Council