Sion may refer to

• an alternative spelling of Zion

• Sion (name) or Siôn, a Welsh and other given name and surname, including a list of people and fictional characters with the name
• Shion or Sion, a Japanese given name

• Sion, Gers, France
• Sion, Saxon-Sion, Meurthe-et-Moselle department, France
• Sion-les-Mines, Loire-Atlantique department, France
• Sion-sur-l'Océan, Vendee department, France
• Mont Sion, namesake of the Priory of Sion

• Sion, Mumbai, India
  • Sion Causeway
  • Sion Creek
  • Sion Hillock Fort
  • Sion railway station (India)

• Sion, Switzerland
  • Sion District
  • Sion Airport
  • Sion railway station (Switzerland)
  • Roman Catholic Diocese of Sion
  • Sion Cathedral

• Sion (Asia Minor), a former ancient city and bishopric, and present Latin Catholic titular see in Asian Turkey
• Sion, Alberta, Canada
• Sion Castle, Czech Republic
• Sion, Netherlands

• Sion (periodical), official organ of the Armenian Patriarchate of Jerusalem
• Sion, a 1987 novel by Vojislav V. Jovanović
• Sion College, a former college, guild of parochial clergy and almshouse in London
• Sono Motors Sion, an electric car
• FC Sion, a Swiss football team
• Sion, an independent heavy metal band founded by Howard Jones and Jared Dines.

• All pages with titles beginning with Sion
• All pages with titles containing Sion
• Mount Sion (disambiguation)
• Sion Hill (disambiguation)
• Sion railway station (disambiguation)
• Scion (disambiguation)
• Sioni (disambiguation)
• Sione
• Syon (disambiguation)
• Xion (disambiguation)
• Zion (disambiguation)
• Benei Sión, also known as Sabatarios and Cabañistas in Chile, are an ethno-religious group
• Sion's minimax theorem in mathematics