The 1965 Five Nations Championship was the thirty-sixth series of the rugby union Five Nations Championship. Including the previous incarnations as the Home Nations and Five Nations, this was the seventy-first series of the northern hemisphere rugby union championship. Ten matches were played between 9 January and 27 March. It was contested by England, France, Ireland, Scotland and Wales. missed out on a fourth Grand Slam after losing to at Stade Colombes despite winning the title.

Participants

The teams involved were:

Table

Results