Siwan

Siwan may refer to Sivan, a month of the Hebrew calendar Siwan (Mandaean month), a month of the Mandaean calendar The Welsh form of Joan (first name) Siwan or Joan, Lady of Wales, the wife and consort of Llywelyn the Great, Prince of Wales Siwan (play), by Saunders Lewis Sewant, beads used as a currency by Native Americans Siwan (album), a musical orchestra project by Jon Balke, and featuring Amina Alaoui Siwan, Henan, a town in Xichuan County, Henan, China

==India== Siwan district, in the state of Bihar Siwan, Bihar, the headquarters of the Siwan district Siwan subdivision, of Siwan district Siwan (community development block), in Siwan district Siwan Lok Sabha constituency, a parliamentary constituency in Bihar Siwan Assembly constituency, a constituency of the Bihar Legislative Assembly Siwan Junction railway station, a railway junction station in the state of Bihar Siwan, Raebareli, a village in Uttar Pradesh