Siana is a city and a municipal board in Bulandshahr district in the Indian state of Uttar Pradesh.
Siana is a feminine given name with multiple meanings and pronunciations. It is a diminutive of Siân, the Welsh form of Jane and means "God is gracious." Siana means "the plentiful springs" in the Maasai language. It is also a name used by Sikhs in India meaning "wise." The Bulgarian name Сияна is also usually transliterated as Siana. It was among the top 10 most popular names given to newborn girls in Bulgaria in 2012.