The article deals with the veneration and knowledge of Irish saints in medieval Iceland. It traces their transmission to Iceland and the development of their cult from both literary and non-literary evidence and elaborates patterns for each Irish saint recorded. Based on the records of individual saints, the veneration of Irish saints is described in a more general manner and its peculiarities explained from the shared history of Ireland and Iceland. A discontinuity between the time of settlement and christianisation is identified and the veneration resulting from the christianisation period revealed as due to continental transmission. Therefore, the veneration and knowledge of Irish saints in medieval Iceland is evaluated as dependant on continental transmission.