IIA
IIA may refer to:
- Independence of irrelevant alternatives
- Indian Institute of Architects
- Indian Institute of Astrophysics
- Indianapolis International Airport
- Institute of Internal Auditors
- International Information Agency
- International Investment Agreement
- Institute of Inter-American Affairs
- IIa or II-a, a subtype of Type II supernova
This disambiguation page lists articles associated with the title IIA.
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