Jhanjharpur Lok Sabha constituency (Hindi: झांझरपुर लोकसभा निर्वाचन क्षेत्र) is one of the 40 Lok Sabha (parliamentary)constituencies in Bihar state in eastern India.
From the 2009 Lok Sabha elections, Jhanjharpur Lok Sabha constituency comprises the following six Vidhan Sabha (legislative assembly) segments:
Coordinates: 26°16′00″N 86°17′00″E / 26.2667°N 86.2833°E