Jablonec may refer to places:
Czech Republic
- Jablonec nad Nisou, a city in the Liberec Region
- FK Jablonec, an association football club
- Jablonec nad Nisou District around the city
- Jablonec nad Jizerou, a town in the Liberec Region
- Jablonec, a village and part of Libčeves in the Ústí nad Labem Region
Slovakia
- Jablonec, Pezinok District, a village in the Bratislava Region
- Gemerský Jablonec, a municipality and village in the Banská Bystrica Region