Sian

Siyan People

People

 * Siân, a Welsh girl's name; list of people with this name

Places

 * Sian, Iran (disambiguation), various places in Iran, Iraq and Balochistan
 * Sian, Russia, a rural locality in Amur Oblast, Russia
 * Xi'an, China, formerly romanized as Sian
 * Sen (river), Yakutia, Russian Federation

Other uses

 * Sian (band), Scottish traditional music band
 * Sian (crater), a crater on Mars
 * Sian language, a Kajang language of Brunei and Sarawak
 * SIANspheric, Canadian band formerly named Sian
 * Stop the Islamisation of Norway (Stopp islamiseringen av Norge, SIAN), a Norwegian anti-Islam group which was established in 2008
 * Siyan, a Kurdish tribe