The 2013 Rugby League World Cup featured the national teams (selected from twenty-four-man squads) of fourteen nations.
With New Zealand claiming the trophy in 2008 and no tournament having been held prior to that since 2000, Australia's squad didn't feature a single World Cup winner.
Head coach: Tim Sheens
Head coach: Steve McNamara
<nowiki>*</nowiki> Replaced initially named Gareth Hock prior to the tournament.
Head coach: Rick Stone
<nowiki>*</nowiki> Replaced initially named John Sutton prior to the tournament.
Head coach: Mark Aston
<nowiki>*</nowiki> Replaced initially named Simon Grix who was ruled out by injury prior to the tournament.
Head coach: Stephen Kearney
<nowiki>*</nowiki> Replaced initially named Tohu Harris prior to the tournament.
Head coach: Adrian Lam
<nowiki>*</nowiki> Replaced initially named James Segeyaro who was ruled out by injury.
Head coach: Richard Agar
<nowiki>*</nowiki> Replaced initially named Clément Soubeyras and Mathias Pala who were ruled out by injuries.
Head coach: Matt Parish
<sup>1</sup> Replaced Roy Asotasi who withdrew from the side.
<sup>2</sup> Replaced initially named Arden McCarthy, Masada Iosefa and Teofilo Lepou who were ruled out by injuries
<sup>3</sup> Allowed to be called up mid-tournament, following injuries to Harrison Hansen, Reni Maitua and Frank Winterstein.
Head coach: Steve McCormack
<nowiki>*</nowiki> Replaced initially named Gareth Moore and Jonathan Walker who were ruled out by injuries.
Head coach: Charlie Tonga
Head coach: Carlo Napolitano
<nowiki>*</nowiki> Replaced initially named Terry Campese, Craig Gower and Vic Mauro who were ruled out by injuries prior to the tournament.
Head coach: David Fairleigh
<nowiki>*</nowiki> Replaced initially named Geoff Daniela who was ruled out by injury.
Head coach: Terry Matterson
Head coach: Iestyn Harris