Abstract This paper deals with the ideological aspects of the Irish epic saga Táin Bó Cúailnge´s first two recensions. The two versions, called Recension I and Recension II differ in some aspects and the purpose of this paper is to map out the differences, as well as the similarities. The analytic tool used is Bruce Lincoln’s myth theory that myth is ideology in narrative form. Using this tool I hope to give more understanding for the old Irish saga and also the people who wrote it and believed in it. The paper starts off with an introduction in research history in the field of myth and then continues explaining Lincoln’s theory and also takes up some of the criticisms against it. This is followed by a closer look at Táin Bó Cúailnge’s history, influences and its purpose. After this background the two different versions are presented with some notes on their origin, dating and authorship, and also short reviews of each version. To understand the ideological aspects of the two different recensions, the texts are first analyzed separately. This is followed by a comparative analysis, where the texts’ similarities and differences are examined. The paper is concluded in short at the end with conclusions drawn from the proceeding discussion and some last words from me, the author. Keywords: Táin Bó Cúailnge, Bruce Lincoln, ideology, mythology