Siwan

Siwan may refer to

• Sivan, a month of the Hebrew 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, India
• Siwan, Bihar, the headquarters of the Siwan district
• Siwan Subdivision, a subdivision of Siwan district
• Siwan block, a Community development block in Siwan district
• Siwan (Lok Sabha constituency), a parliamentary constituency in Bihar, India
• Siwan (Vidhan Sabha constituency), a Legislative constituency in Bihar, India
• Siwan Junction, a railway junction station in the state of Bihar, India
• Siwan, a village in Uttar Pradesh, India

People

People with given name Siwan

• Siwan, a Korean singer, member of boy group ZE:A
• Siwan Morris, Welsh actress