1951 Five Nations Championship
The 1951 Five Nations Championship was the twenty-second series of the rugby union Five Nations Championship. Including the previous incarnations as the Home Nations and Five Nations, this was the fifty-seventh series of the northern hemisphere rugby union championship. Ten matches were played between 13 January and 7 April. It was contested by England, France, Ireland, Scotland and Wales. missed out on a second Grand Slam after drawing against at Cardiff Arms Park, but won the championship.
Participants
The teams involved were:| Nation | Venue | City | Captain |
| Twickenham | London | Vic Roberts/John Kendall-Carpenter | |
| Stade Olympique Yves-du-Manoir | Colombes | Guy Basquet | |
| Lansdowne Road | Dublin | Karl Mullen | |
| Murrayfield | Edinburgh | Peter Kininmonth | |
| National Stadium/St. Helens | Cardiff/Swansea | John Gwilliam/Jack Matthews |