- Institut Europeen d’archeologie sous marine (IEASM)
- Institut français d’archéologie orientale du Caire (IFAO)
- Institute for Mummy Studies
- Institute for research and learning in archaeology and bioarchaeology-IRLAB
- Institute of Archaeology, Chinese Academy of Social Sciences. 中国社会科学院考古研究所
- Institute of Archeology and Ethnography SB RAS (Siberian Branch of the Russian Academy of Sciences). Институт археологии и этнографии СО РАН, ИАЭТ СО РАН
- Instituto Colombiano de Antropología e Historia (ICANH)
- Instituto Nacional de Antropología e Historia (INAH)
- International Archaeology
- International Association of Dealers in Ancient Art (IADAA)
- International Centre for the Study of the Preservation and Restoration of Cultural Property (ICCROM)
- International Chemical Analysis (ICA)
- International Council for Archaeozoology (ICAZ)
- International Council on Monuments and Sites (ICOMOS)
- Interpol
- Israeli Institute of Archaeology