| 1955 Five Nations Championship | |
| Date: | 8 January – 26 March 1955 |
| Countries: | |
| Champions: | and |
| Matches: | 10 |
| Previous Year: | 1954 |
| Previous Tournament: | 1954 Five Nations Championship |
| Next Year: | 1956 |
| Next Tournament: | 1956 Five Nations Championship |
The 1955 Five Nations Championship was the twenty-sixth series of the rugby union Five Nations Championship. Including the previous incarnations as the Home Nations and Five Nations, this was the sixty-first series of the northern hemisphere rugby union championship. Ten matches were played between 8 January and 26 March. It was contested by England, France, Ireland, Scotland and Wales.
missed out on a maiden Grand Slam after losing to at Stade Colombes.
The teams involved were: