2023 World Rugby Pacific Nations Cup

The 2023 World Rugby Pacific Nations Cup was the sixteenth edition of the Pacific Nations Cup annual international rugby union competition.

Four teams competed, with Fiji, Samoa and Tonga returning, whilst Japan is reinstated for the first time since 2019, as the four nations use the tournament as preparation ahead of the 2023 Rugby World Cup.

Fiji won the title, their sixth time, and won it for the first time since 2018.

Round 1
Notes:
 * Te Ahiwaru Cirikidaveta, Caleb Muntz, Selestino Ravutaumada, Lekima Tagitagivalu (all Fiji) and Patrick Pellegrini (Tonga) made their international debuts.

Notes:
 * Amato Fakatava, Shota Fukui, Jone Naikabula, Tomoki Osada (all Japan), So'otala Fa'aso'o, Christian Leali'ifano, Charlie Faumuina, Miracle Faiʻilagi and Martini Talapusi (all Samoa) made their international debuts.
 * This was Samoa's first win over Japan since their 27–26 win in 2012.

Round 2
Notes:
 * Sama Malolo and Steve Luatua (both Samoa) and Meli Derenalagi, Ilaisa Droasese Iosefo Masi, Vilive Miramira and Joseva Tamani (all Fiji) made their international debuts.

Notes:
 * Sonatane Takulua (Tonga) became the first Tongan to reach the milestone of 50 test caps.

Round 3
Notes:
 * Kotaro Matsushima (Japan) earned his 50th test cap.
 * This was Fiji's first win over Japan in Japan since their 25–19 victory in 2012.

Fiji
On 27 June, head coach Simon Raiwalui named a 39-player squad for the 2023 World Rugby Pacific Nations Cup.

Japan
On 11 June, Japan named an extended 46-player squad ahead of the team's preparation for the 2023 Rugby World Cup.

Samoa
On 18 June 2023, the following 40 players were called up in preparation for the 2023 Rugby World Cup

Tonga
On 14 June, the following 35 players were called up for the July 2023 internationals.