贾纳克布尔是尼泊尔的城市，位于该国东南部，由贾纳克布尔专区负责管辖，距离首都加德满都约123公里，面积24.61平方公里，海拔高度70米，每年平均降雨量1,395毫米，2005年人口约93,000。

Janakpur (IPA: [dʒəŋɑkpʊr]) also known as Janakpurdham is the administrative and capital city of the Mithila federal state of Nepal and is one of the historical and religious cities of Nepal being the birthplace of Hindu goddesses Sita . Janakpur is also the administrative headquarters of Dhanusa District of the Janakpur Zone and as of 2015 had a population of 1,69287. The city is located about 123 kilometres (76 mi) south-east of Kathmandu, the capital city of Nepal. Janakpur has a substantial tourism industry due to its significance in the Hindu religion and is home to the only operational railway in Nepal, the Nepal Railways.