Irra can refer to:
*IRRA,
The Institute of Russian Realist Art
*
Lugal-Irra
In ancient Mesopotamian religion, Lugal-irra () and Meslamta-ea () are a set of twin gods who were worshipped in the village of Kisiga, located in northern Babylonia. The Great Twins were regarded as guardians of doorways and they may have origi ...
, a Sumerian, Babylonian, and Akkadian god
*IRRA, an acronym in economics, finance, and decision theory for
increasing relative risk aversion
*IRRA, former pseudonym of Romanian singer and songwriter
Irina Rimes
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