IFIR Views 5 meanings found IFIR can refer to scientific institutes focusing on entomology, international refugee federations, industry roundtables for the forest sector, or technical terms such as interpolated finite impulse response filters. Miscellaneous Interpolated Finite Impulse Response Community International Forest Industry Roundtable Idcinternational Forest Industry Roundtable Governmental International Federation Of Iranian Refugees International Institut für Insektenkunde im Ruhrgebiet