This article lists the official squads for the 1999 Rugby World Cup in Wales.
Head coach: Jim Telfer
Head coach: Nick Mallett
Head coach: Alfonso Feijoo
Head coach: Daniel Herrera
Head coach: Clive Woodward
Leon Lloyd and Martyn Wood were called up on 23 September as injury replacements for Kyran Bracken and David Rees.
Head coach: Massimo Mascioletti
Head coach: John Hart
Head coach: Polutele Tuûihalamaka
Head coach: Brad Johnstone
Head coach: Rudy Joubert
Head coach: Jean-Claude Skrela
<sup>1</sup> Fabien Galthié was called up to the squad to replace Pierre Mignoni, who suffered an injury mid-tournament.
Head coach: / Patrick Parfrey
Wales named an initial 30-man squad for the tournament in June 1999. The highlight of the selection was centre Jason Jones-Hughes, who was born in Australia, but was believed to be qualified for Wales through his father. The Australian Rugby Union (ARU) disputed Jones-Hughes' selection because he had already played for the Australian Barbarians, who were considered Australia's de facto second team. This led to a protracted legal battle over Jones-Hughes' eligibility for Wales, in which the International Rugby Board initially ruled in Australia's favour; on appeal, Wales were allowed to select Jones-Hughes, but the ARU refused to release him from his contract with New South Wales. Nevertheless, Jones-Hughes was ultimately allowed to join the Wales team and was named on the bench for the tournament opener against Argentina.
Head coach: Graham Henry
Head coaches: Alex Wyllie and Héctor Mendéz
Head coach: Bryan Williams
Head coach: Seiji Hirao
Head coach: Warren Gatland
Gordon D'Arcy replaced the injured Girvan Dempsey on 11 September 1999.
Head coach: Jack Clark
Head coach: Rod MacQueen
Head coach: Mircea Paraschiv