| 2 | BK | | | Australiasortname|Jai|Arrowbirth date and age2|2019|10|18|1995|7|12|df=yes Coach: Michael Maguire New Zealand named their 16-man squad on 9 October 2019. James Fisher-Harris and Jordan Rapana were originally named, but withdrew and were replaced by Zane Tetevano and Charnze Nicoll-Klokstad respectively. Braden Hamlin-Uele was ruled out after the final squads had been finalised. Adam Blair was brought in as a late replacement.
| No. | Pos. | Player | Date of birth | Club | | 8 | FW | | | New Zealandsortname|Adam|Blairbirth date and age2|2019|10|18|1986|03|23|df=yes Coach: Michael Marum PNG named their 16-man squad on 1 October 2019. James Segeyaro and Lachlan Lam were originally named, but were replaced by Moses Meninga and Wartovo Puara.
| No. | Pos. | Player | Date of birth | Club | | 10 | BK | | | Englandsortname|Watson|Boasbirth date and age2|2019|10|18|1994|11|08|df=yes Coach: Sean Rutgerson The United States named a 20-man training squad on 3 September 2019. The final 16-man squad was announced on 10 October 2019.
| No. | Pos. | Player | Date of birth | Club | | 2 | BK | | | United Statessortname|Brock|Daviesbirth date and age2|2019|10|18|1990|06|14|df=yes
Pool BEnglandCoach: Wayne Bennett England named their 16-man squad on 6 October 2019. Jack Hughes was originally named, but withdrew due to injury. He was replaced by Blake Austin.
| No. | Pos. | Player | Date of birth | Club | | 7 | BK | | | Englandsortname|Tom|Burgess|dab=rugby leaguebirth date and age2|2019|10|18|1992|04|21|df=yes
FranceCoach: Aurélien Cologni France named a 17-man squad on 2 October 2019. Lilian Albert was originally named but withdrew.
| No. | Pos. | Player | Date of birth | Club | | 6 | BK | | | Francesortname|Jason|Baitieribirth date and age2|2019|10|18|1989|07|02|df=yes
LebanonCoach: Rick Stone Lebanon named their 16-man squad on 10 October 2019. Anthony Layoun was originally named but was replaced by Jordan Samrani. Jacob Kiraz and Jordan Samrani were ruled ineligible to participate due to being under the age of 18. Kiraz took the field against France, however.
| No. | Pos. | Player | Date of birth | Club | | 13 | FW | | | Australiasortname|Jayden|El-Jalkhbirth date and age2|2019|10|18|1997|9|26|df=yes
WalesCoach: John Kear Wales named a 23-man training squad on 16 September. The final 16-man squad was announced on 9 October 2019.
| No. | Pos. | Player | Date of birth | Club | | 15 | FW | | | Englandsortname|Mike|Buttbirth date and age2|2019|10|18|1995|05|06|df=yes
Pool CCook IslandsCoach: Tony Iro
| No. | Pos. | Player | Date of birth | Club | | 1 | BK | | | New Zealandsortname|Anthony|Gellingbirth date and age2|2019|10|18|1990|10|18|df=yes
FijiCoach: Brandon Costin Fiji named their 16-man squad on 10 October 2019. Mikaele Ravalawa was originally named but was replaced by Semi Valemei.
| No. | Pos. | Player | Date of birth | Club | | 6 | BK | | | Australiasortname|Viliame|Kikaubirth date and age2|2019|10|18|1995|04|05|df=yes
SamoaCoach: Matt Parish Samoa named their 16-man squad on 10 October 2019.
| No. | Pos. | Player | Date of birth | Club | | 8 | FW | | | New Zealandsortname|Dean|Blorebirth date and age2|2019|10|18|1998|09|29|df=yes
TongaCoach: David Tangata-Toa Tonga named their 16-man squad on 11 October 2019. Included in the squad was two players named "Sione Katoa" - Sione Katoa and Sione Katoa. The latter is referred to by his full name, Sione Utia-Katoa, for clarity.
| No. | Pos. | Player | Date of birth | Club | | 7 | BK | | | Australiasortname|William|Fakatoumafibirth date and age2|2019|10|18|2001|01|25|df=yes
WomenAustraliaCoach: Brad Donald Australia named their 17-person squad on 7 October 2019. Brittany Breayley and Tamika Upton were originally named but withdrew and were replaced by Tarryn Aiken.
| No. | Pos. | Player | Date of birth | Club | | 16 | BK | | | Australiasortname|Kezie|Appsbirth date and age2|2019|10|18|1991|02|04|df=yes
EnglandCoach: Craig Richards England women's squad was named on 2 August 2019. Shannon Lacey was ruled out by injury, and was replaced by Georgia Wilson.
| No. | Pos. | Player | Date of birth | Club | | 4 | FW | | | Englandsortname|Caitlin|Beeversbirth date and age2|2019|10|18|2001|10|11|df=yes
New ZealandCoach: Justin Morgan New Zealand women's squad was named on 9 October. Lavinia Gould was originally named but was replaced by Kanyon Paul.
| No. | Pos. | Player | Date of birth | Club | | 2 | | | | New Zealandsortname|Teuila|Fotu-Moalabirth date and age2|2019|10|18|1993|11|29|df=yes Coach: Bagelo Solien Papua New Guinea women's squad was named on 1 October. Shae-Yvonne De La Cruz and Veronica Waula were originally named but were replaced by Gloria Kaupa and Mellisa Peters. Sera Koroi and Joyce Waula were ruled ineligible to participate due to being under the age of 18.
| No. | Pos. | Player | Date of birth | Club | | 20 | | | | Papua New Guineasortname|Catherine|Anjo
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