Born in Nobber, County Meath, Eogan studied at University College Dublin (UCD) and then Trinity College Dublin. In 1965, he was appointed to a lectureship at UCD, becoming a professor in 1979, and also serving as head of department from then until 1995.
Eogan is particularly known for his work over forty years at Knowth, having been Director of the Knowth Research Project. In 1968, he became the first person in over a millennium to enter the east-side tomb at the site.
- From megaliths to metal: essays in honour of George Eogan, p.xii
- "George Eogan", Knowth.com
- "An outstanding Meathman dedicated to uncovering the past", The Meath Chronicle, 27 June 2012