2016

• Imsen, Steinar. (2016) Da reformasjonen kom til Norge. Cappelen Damm Akademisk Cappelen Damm Akademisk
  Academic monograph

2015

• Imsen, Steinar. (2015) Land og folk i den norrøne verda ca. 900 til 1450. Det Norske Samlaget Det Norske Samlaget
  Academic monograph

2014

• Imsen, Steinar. (2014) Rex Insularum. The King of Norway and his "skattlands" as a political system c.1260-c.1450. Fagbokforlaget Fagbokforlaget
  Academic anthology/Conference proceedings
• Imsen, Steinar. (2014) Region - provins - rike: utvalgte artikler om samvirke og konflikt. Institutt for historiske studier, NTNU Institutt for historiske studier, NTNU
  Academic anthology/Conference proceedings

2013

• Imsen, Steinar. (2013) Legislation and State Formation. Norway and its neighbours in the Middle Ages. Akademika forlag Akademika forlag
  Academic anthology/Conference proceedings

2012

• Imsen, Steinar. (2012) Sveriges historia 600-1600. Scandia: Tidsskrift för historisk forskning
  Academic literature review
• Imsen, Steinar. (2012) "Ecclesia Nidrosiensis" and "Noregs veldi". The role of the Church in the making of Norwegian domination in the Norse World. Akademika forlag Akademika forlag
  Academic anthology/Conference proceedings
• Imsen, Steinar. (2012) The Country of Orkney and the Complaints against David Menzies.
  Academic chapter/article/Conference paper
• Imsen, Steinar. (2012) William Layher: Queens and Voice in Medieval Northern Europe (Queenship and Power). Speculum
  Book review

2011

• Imsen, Steinar. (2011) Senmedeltiden. Europas historia 1300-1550. Dialogos Förlag Dialogos Förlag
  Non-fiction book
• Imsen, Steinar. (2011) Taxes, tributes and tributary lands in the making of the Scandinavian kingdoms in the Middle Ages. Tapir Akademisk Forlag Tapir Akademisk Forlag
  Academic anthology/Conference proceedings

2010

• Imsen, Steinar. (2010) Marc Bloch og arven etter Edvard Bull. Heimen - Lokal og regional historie
  Academic article
• Imsen, Steinar. (2010) Kari Tarkiainen: Sveriges Österland. Från forntiden till Gustav Vasa. Finlands svenske historia 1. Historisk tidsskrift
  Book review
• Imsen, Steinar. (2010) The Norwegian Domination and the Norse World c. 1100 – c. 1400. Tapir Akademisk Forlag Tapir Akademisk Forlag
  Academic anthology/Conference proceedings

2009

• Imsen, Steinar. (2009) The Scottish-Norwegian Border in the Middle Ages.
  Academic chapter/article/Conference paper
• Imsen, Steinar. (2009) Den gammelnorske drapsprosessen. Historisk tidsskrift
  Academic article

2007

• Imsen, Steinar. (2007) The Union of Calmar - Nordic Great Power or Northern German Outpost.
  Academic chapter/article/Conference paper
• Imsen, Steinar. (2007) "Landet Orknoy oc greuescapet ther same stadhs". Historisk tidsskrift
  Academic article

2005

• Imsen, Steinar. (2005) Grenser og grannelag i Nordens historie. Cappelen Damm Akademisk Cappelen Damm Akademisk
  Academic anthology/Conference proceedings

2004

• Imsen, Steinar. (2004) Den politiske situasjonen i 1536. Hvilken politisk makt hadde Olav Engelbrektsson?.
  Academic chapter/article/Conference paper

2003

• Imsen, Steinar. (2003) Earldom and Kingdom. Orkney in the Realm of Norway 1195-1379. The faces of Orkney
  Academic article
• Imsen, Steinar. (2003) Ecclesia Nidrosiensis 1153-1537. Søkelys på Nidaroskirkens og Nidarosprovinsens historie. Tapir Akademisk Forlag Tapir Akademisk Forlag
  Non-fiction book

2002

• Imsen, Steinar. (2002) Noregs nedgang. Det Norske Samlaget Det Norske Samlaget
  Academic monograph
• Imsen, Steinar. (2002) Late Medieval Scandinavian Queenship.
  Academic chapter/article/Conference paper
• Imsen, Steinar. (2002) Tingwall and Local Community Power in Shetland during the Reign of Håkon Magnusson, Duke and King. Collegium Medievale
  Academic article

2000

• Imsen, Steinar. (2000) Europa 1300-1550. Universitetsforlaget Universitetsforlaget
  Textbook
• Imsen, Steinar. (2000) Hirdloven til Norges konge og hans håndgangne menn. Riksarkivet Riksarkivet
  Academic monograph
• Imsen, Steinar. (2000) King Magnus and his Liegmen's "Hirdskrå": A Portrait of the Norwegian Nobility in the 1270s.
  Academic chapter/article/Conference paper

1999

• Imsen, Steinar; Winge, Harald. (1999) Norsk Historisk Leksikon, 3. utgave. Cappelen Damm Akademisk Cappelen Damm Akademisk
  Encyclopaedia
• Imsen, Steinar. (1999) Public Life in Shetland and Orkney c. 1300-1550. New Orkney Antiquarian Journal
  Academic article
• Imsen, Steinar. (1999) Kommunalismus auf Norwegisch. Zeitschrift für Agrargeschichte und Agrarsoziologie
  Academic article

1997

• Imsen, Steinar. (1997) Communalism and state-building in Norway 1537-1648. Scandinavian Journal of History
  Academic article
• Imsen, Steinar. (1997) Oslofjordbygdene som politisk og sosialt stormsentrum under Erik av Pommern. Vestfoldminne
  Academic article
• Imsen, Steinar; Vogler, Günter. (1997) Communal autonomy and peasant resistance in Northern and Central Europe.
  Academic chapter/article/Conference paper
• Imsen, Steinar. (1997) Det gamle tinget - og det nye.
  Academic chapter/article/Conference paper