Zonguldak Province (Turkish: Zonguldak ili) is a province along the western Black Sea coast region of Turkey. Its area is 3,342 km, and its population is 588,510 (2022). Its adjacent provinces are Düzce to the southwest, Bolu to the south, Karabük to the southeast, and Bartın to the east. The capital is Zonguldak. Its Governor is Osman Hacıbektaşoğlu.