Patrick O'Flanagan (born 1947 in Dublin, Ireland) is an Irish geographer and academic.
He is emeritus professor of the Department of Geography at University College Cork, Ireland.
At present, he contributes regularly to the Socio-Territorial Research Group at the University of Santiago de Compostela (Galicia).
O'Flanagan helped to define and standardise the actual concept of Atlantic Europe.
Other research deals with comparative evolution of port cities, rural change, housing and settlement studies.