Saharsa, also known as chotta kapil ka ghar, is a town and municipal corporation in Saharsa district in the eastern part of the state of Bihar, India. It is located near the eastern bank of the Kosi River. It serves as the administrative headquarters of Saharsa district and is also the headquarters of Kosi division.
The name Saharsa comes from the Sanskrit word Sahasra Dhara, which means "land of a thousand tributaries". The regional language of the city is Maithili. Apart from Maithili, Hindi is widely understood and spoken.