Iya may refer to:
- people
- Iya Abubakar, Nigerian politician
- Iya Arepina, Russian actress
- Iya Nacuaa Teyusi Ñaña, Mixtec ruler
- Iya Savvina, Soviet actress
- Iya Villania, Australian actress
- Iya Parent, Polish Aunt
- places
- Mount Iya, volcano in Indonesia
- Iya River, river in Irkutsk Oblast in Russia
- Iya Station, railway station in Japan
- Iya Valley, valley in Japan
- other uses
- Iya (mythology) in Latoka mythology
- Iyayu language, ISO 639-3 code "iya"
IYA may refer to:
- International Year of Astronomy (IYA2009)