The 2006 Interprovincial Championship, (also known as the Railway Cup or The Martin Donnelly Cup was a Gaelic Athletic Association competition between the four provinces of the Island of Ireland. The 2006 football final was held at Boston in the United States of America and the hurling final was played at Pearse Stadium, Galway, Ireland on October, 2006. 2006s interprovincial championship finished with Leinster claiming the Martin Donnelly cup in both hurling and Gaelic football.