MIAA may refer to:
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Maine Intercollegiate Athletic Association, defunct athletic conference of schools in Maine
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Manila International Airport Authority, transportation agency in the Philippines
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Maryland Interscholastic Athletic Association, high school athletic conference for private schools in the Baltimore Metro area
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Massachusetts Interscholastic Athletic Association, high school athletic association governing 33 varsity sports throughout Massachusetts
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Michigan Intercollegiate Athletic Association, athletic conference of NCAA Division III schools in Michigan and Indiana
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Mid-America Intercollegiate Athletics Association
The Mid-America Intercollegiate Athletics Association (MIAA) is a List of NCAA conferences, college athletic conference affiliated with the National Collegiate Athletic Association (NCAA) at the NCAA Division II, Division II level, headquartered ...
, athletic conference of NCAA Division II schools in Kansas, Missouri, Nebraska, and Oklahoma
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TRNA dimethylallyltransferase
TRNA dimethylallyltransferase (, ''tRNA prenyltransferase, MiaA, transfer ribonucleate isopentenyltransferase'', ''Delta2-isopentenyl pyrophosphate:tRNA-Delta2-isopentenyl transferase'', ''Delta2-isopentenyl pyrophosphate:transfer ribonucleic acid ...
, an enzyme
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