There is more than one place called Oia:

Brazil

• OIA  ^IATA — the airport of Ourilândia do Norte in Pará (Brazil)

Greece

• Oia or Ia — a town on the Santorini island

Portugal

• Oiã — a town in the municipality of Oliveira do Bairro

Spain

• Oia — a municipality in Galicia

United States of America

• "OIA" — a local abbreviation for Orlando International Airport (MCO ^IATA)

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