科斯塔伊尼察是克罗地亚的城镇，位于该国中部乌纳河左岸，由锡萨克-莫斯拉维纳县负责管辖，主要经济活动是农业、皮革业、纺织业等，2011年人口2,763。

• 官方网站
• http://www.kostajnica.com/

Hrvatska Kostajnica (Croatian pronunciation: [xř̩ʋaːtskaː kǒstaːjnit͡sa]), often just Kostajnica, is a small town in central Croatia. It is located on the Una river in the Sisak-Moslavina County, south of Petrinja and Sisak and across the river from Bosanska Kostajnica in Bosnia and Herzegovina.