Ostan

Ostan may refer to:


 * OS-tan, Internet personifications of operating systems
 * Ostan (Geography), Iranian name for "province"
 * Ostan or Óstán, Irish word for "hotel", which may be seen around Ireland
 * Spring festival in Austria, 2 days after Easter
 * Polish name for "Go with God"
 * Ostan, Old High German word for "dawn"
 * Östan, Swedish word meaning "East wind"