The 2007 Rugby World Cup was played in France between 7 September and 20 October 2007. Each of the 20 competing nations was required to confirm their 30-man squad by 14 August. United States player Thretton Palamo, aged 18 when the teams were named and 8 days past his 19th birthday when he made his only appearance in the competition, was the youngest to ever take part at a World Cup final stage.
Squad released 21 July 2007 Pierre Spies was withdrawn from the squad after developing a condition believed to be a pulmonary embolism, with Bismarck du Plessis taking his place, although one specialist disputed the diagnosis. A third specialist confirmed the original diagnosis, and Spies remained off the team. On 10 September, after the Springboks' match against Manu Samoa, Jean de Villiers was ruled out of the rest of the World Cup with a torn left biceps suffered in that match. Wayne Julies replaced him on the squad. On 1 October, Jannie du Plessis, older brother of Bismarck du Plessis, replaced BJ Botha, who tore knee ligaments in the Boks' last pool match against the United States. Head coach: Jake White
Squad announced 10 August 2007 Head coach: Gareth Jenkins
Pool C
Italy
Squad released 16 August 2007. Carlo Del Fava withdrew due to injury on 17 August. Fabio Staibano was originally announced as his replacement, but he was in turn ruled out due to injury. Del Fava was later ruled fit to play, and was restored to the squad on 27 August. Silvio Orlando replaced Robert Barbieri after he was ruled out due to injury in a warm-up game. Head coach: Pierre Berbizier
New Zealand
Squad announced 22 July 2007 Head coach: Graham Henry
Portugal
Squad announced 15 August 2007 Head coach: Tomaz Morais
Squad released 28 July 2007 from . Additional information from . Martín Gaitán was forced to withdraw from the squad on 18 August after it was discovered he had a blocked artery in his heart, and was replaced by Hernán Senillosa. José María Núñez Piossek was forced to withdraw from the squad due to injury on 30 August, and was replaced by Federico Martín Aramburú. Mario Ledesma was forced to withdraw from the squad for the third-place match against France due to injury on 15 October, and was replaced by Eusebio Guiñazú. Head coach: Marcelo Loffreda
France
Provisional squad announced 14 June 2007, from . Elvis Vermeulen replaced by Thierry Dusautoir due to injury on 21 June . Sylvain Marconnet was replaced due to injury by Nicolas Mas on 20 August . Head coach: Bernard Laporte The following players are on reserve in case of withdrawals from the squad.
Georgia
Final squad released on 9 August 2007 from , other details from Head coach: Malkhaz Cheishvili
Ireland
Squad listed from 12 August 2007, further information from . Head coach: Eddie O'Sullivan
Namibia
Squad released 18 July 2007 from , additional information from and . Head coach: Hakkies Husselman