Sibolga, formerly sometimes spelled Siboga, is a city port located in the natural harbour of Sibolga Bay on the west coast of North Sumatra province, in Indonesia. The city is close to the Nias archipelago and to thickly forested mountains. Around the turn of the 20th century it was an old trading port under English and then Dutch administration.

In the city there are plenty of mosques including a large new one under construction towards the waterfront, plus at least one older church - three other temples are also present. Sibolga is fairly a great place ready to be discover of the things it offer.