This is a list of the complete squads for the 2010 Six Nations Championship, an annual rugby union tournament contested by the national rugby teams of England, France, Ireland, Italy, Scotland and Wales. Each country was entitled to name a squad of 39 players to contest the championship. They could also invite additional players along prior to the start of the championship while the coach could call up replacement players if squad members suffered serious injury.
All caps are as of the start of the tournament, and do not include appearances made during the competition.
England
Martin Johnson named a revised 32-man England squad for the 2010 Six Nations Championship. On 25 January, Cole, Mullan, Robshaw, Ward-Smith and Youngs were promoted to Senior EPS to provide injury cover for other players. Jamie Noon was called up to replace Dan Hipkiss due to injury ahead of the Ireland game, while Charlie Hodgson was brought in to provide cover. Ahead of the Scotland game, Fourie, Tindall, Morgan and Geraghty were called up to the squad.
Head Coach: Martin Johnson
Note: Flags indicate national union for the club/province as defined by World Rugby.