Oia ko OIA na iya nufin to:
- Oia, Spain, gundumar Galicia, a lardin Pontevedra
- Oia, Girka, ƙaramin gari a tsibirin Santorini
- Oia, madadin sunan Oea (Attica) garin tsohuwar Attica
- Oia, madadin sunan Oea (Thera)garin tsohuwar Thera (Santorini)
- Filin jirgin saman Ourilândia do Norte, filin jirgin sama tare da mai gano IATA OIA
- Filin jirgin saman kasa da kasa na Orlando ("OIA" raguwa ne na gida)wanda a zahiri yana amfani da haruffan MCO don nadin filin jirgin sa.
- Ofishin Mai Shari'a mai zaman kansa, babban jami'in hulda da jama'a na ilimi a Burtaniya
- Dokar Bayanai ta hukuma 1982, yanki na dokokin New Zealand
- Ofishin Harkokin Insular, ofishin Ma'aikatar Cikin Gida ta Amurka
- DHS Office of Intelligence and Analysis, ofishin Ma'aikatar Tsaron Cikin Gida ta Amurka
- Ofishin Leken Asiri da Nazarin (Ma'aikatar Baitulmali), ƙungiyar leken asirin Ma'aikatar Baitulmalin Amurka
- <i id="mwJw">Oia</i> (gizo -gizo) nau'in gizo -gizo a cikin dangin Linyphiidae
- Ƙungiyar Interscholastic ta Oahu, ƙungiyar 'yan wasa ta makarantun sakandare na jama'a a tsibirin Oahu, Hawaii
- Tsohon Indo-Aryan, tsoffin harsunan Indo-Aryan