Laois joined Division 1 as the promoted team.
On 18 September 1966, Kilkenny won the title after a 10-15 to 2-15 aggregate win over New York in the final.
[1] In spite of finishing at the bottom of their respective groups, neither Galway of Laois were relegated.
Tipperary's Jimmy Doyle was the Division 1 top scorer with 4-20.
Semi-finals Final On 9 October 1966, Mayo won the title after a 1-12 to 1-8 win over Armagh in the final.