IIA
IIA may refer to: Independence of irrelevant alternatives Indian Institute of Architects Indian Institute of Astrophysics Indianapolis International Airport Institute of Internal Auditors Information Industry Association International Investment Agreement Islamabad International Airport IIa or II-a, a subtype of Type II supernova A rating in the Hong Kong motion picture rating system See also Iia, Estonia, village in Estonia 2A (disambiguation), including a list of topics named II-A, etc. sv:IIA