The Iron Age to Historical Archaeology Research Group (IAHA) strives to increase the use of interdisciplinarity to answer archaeological questions between the Early Iron Age and recent history. It includes and bridges the traditional subdisciplines of later prehistoric, Viking Age, Medieval and Historical Archaeology. The research group focuses on connectivity and transformation, including key topics such as: environmental change, agrarian economies, the importance of natural (mountain, forest and marine) resources, human-wildlife interactions, monetisation, urban living, health, rural-urban networks (at scales ranging from the local to global), religious practises and social stability/instability.

IAHA has very active collaborations with the National Laboratory for Age Determination and also works closely with the Department of Natural History. It has strong intra-departmental cooperation with the Environmental Archaeology Group and TEMAR. It has extensive national and international collaborations and welcomes overtures for future cooperative research projects. Key areas of methodological expertise include field archaeology, maritime archaeology (including the use of autonomous vehicles), material culture studies, remote sensing (including drone-based LiDAR), dendrochronology, radiocarbon dating, stable isotope analysis, ancient DNA and zooarchaeology.

Intellectually, IAHA seeks to combine strong traditions of field archaeology, material culture studies, archaeological theory, text-based research and archaeological science in order to answer pressing questions of past and contemporary relevance, ranging from anthropogenic environmental impacts, to the distinctive foundations of economic life in the north, to the symbolic construction of community.