Idiopathic Refractory Sideroblastic Anemia - Medicine (MAE)
Immigration and Refugee Services of America (EA)
Improved Radiator Standards Association (EA)
Independent Road Service Association (EA)
Industrial Radiographic Service Association (SAUO)
Institute of Remote Sensing Applications (GIS)
International Racquet Sports Association - Later, IRSAAQC (EA)
International Radiator Standards Association (SAUO)
International Rett Syndrome Association (EA)
International Rural Sociological Association (SAUO)
International Rural Sociology Association (EA)
Iodinated Rat Serum Albumin (DMAA)
Irish Research Scientists Association
IRSA Inversiones y Representaciones SA - Associated Press (SAG)