As the clock ticks down til the Rugby World Cup kicks off in Japan, every nation has named their 31-man squad.
Hosts Japan take on Russia in the opening clash of the tournament on Friday September 20, with the final to come just six weeks later.
Here we list every tournament squad.
Argentina
Coach: Mario Ledesma
Captain: Pablo Matera
Best finish: Semifinals 2007, 2015
Squad: Nahuel Tetaz Chapparo, Mayco Vivas, Agustin Creevy, Julian Montoya, Santiago Socino, Juan Figallo, Santiago Medrano, Enrique Pieretto, Guido Petti, Tomas Lavanini, Matias Alemanno, Pablo Matera, Tomas Lezana, Javier Ortega Desio,Marcos Kremer, Rodrigo Bruni, Juan Manuel Leguizamon. Tomas Cubelli, Felipe Ezcurra, Nicolas Sanchez,Benjamin Urdapilleta, Jeronimo de la Fuente, Matias Orlando,Matias Moroni, Lucan Mensa, Juan Cruz Mallia, Ramiro Moyano, Bautista Delguy, Emiliano Boffelli, Joaquin Tuculet, Santiago Carreras.
Australia
Coach: Michael Cheika
Captain: Michael Hooper
Best finish: World Cup champions 1991, 1999
Squad: Allan Alaalatoa, Rory Arnold, Adam Coleman, Jack Dempsey, Folau Fainga'a, Michael Hooper, Sekope Kepu, Tolu Latu, Isi Naisarani, David Pocock, Izack Rodda, Lukhan Salakaia-Loto, Rob Simmons, Scott Sio, James Slipper, Taniela Tupou, Jordan Uelese,.Adam Ashley-Cooper, Kurtley Beale, Bernard Foley, Will Genia, Dane Haylett-Petty, Reece Hodge, Samu Kerevi, Marika Koroibete, Tevita Kuridrani, Christian Lealiifano, James O'Connor, Jordan Petaia, Matt Toomua, Nic White.
Canada
Coach: Kingsley Jones
Captain: Tyler Ardron
Best finish: Quarterfinals 1991
Squad: Tyler Ardron (c), Kyle Baillie, Justin Blanchet, Hubert Buydens, Luke Campbell, Matt Heaton, Eric Howard, Jake Ilnicki, Cole Keith, Conor Keys, Evan Olmstead, Benoit Piffero, Andrew Quattrin, Lucas Rumball, Djustice Sears-Duru, Mike Sheppard, Matthew Tierney. Nick Blevins, Andrew Coe, Jeff Hassler, Ciaran Hearn, Ben LeSage, Phil Mack, Jamie Mackenzie, Gordon McRorie, Peter Nelson, Shane O'Leary, Patrick Parfrey, Taylor Paris, Conor Trainor, DTH van der Merwe
England
Coach: Eddie Jones
Captain: Owen Farrell
Best finish: Rugby World Cup champions 2003
Squad: Dan Cole, Luke Cowan-Dickie, Tom Curry, Ellis Genge, Jamie George, Maro Itoje, George Kruis, Joe Launchbury, Courtney Lawes, Lewis Ludlam, Joe Marler, Kyle Sinckler, Jack Singleton, Sam Underhill, Billy Vunipola, Mako Vunipola, Mark Wilson. Joe Cokanasiga, Elliot Daly, Owen Farrell, George Ford, Piers Francis, Willi Heinz, Jonathan Joseph, Jonny May, Ruaridh McConnochie, Jack Nowell, Henry Slade, Manu Tuilagi, Anthony Watson, Ben Youngs.
Fiji
Coach: John McKee
Captain: Dominiko Waqaniburotu
Best finish: Quarterfinals 1987, 2007
Squad: Campese Ma'afu, Eroni Mawi, Peni Ravai, Mesulame Dolokoto, Samuel Matavesi, Vere Vugakoto, Lee-Roy Atalifo, Manasa Saulo, Kalivati Tawake, Tevita Cavubati, Leone Nakarawa, Api Ratuniyarawa, Tevita Ratuva, Semi Kunatani, Viliame Mata, Mosese Voka, Dominiko Waqaniburotu, Peceli Yato. Frank Lomani, Nikola Matawalu, Henry Seniloli, Levani Botia, Jale Vatubua, Ben Volavola, Vereniki Goneva, Filipo Nakosi, Waisea Nayacalevu, Semi Radradra, Josua Tuisova, Joshua Matavesi, Alivereti Veitokani, Kini Murimurivalu
France
Coach: Jacques Brunel
Captain: Guilhem Guirado
Best finish: Runner-up 1987, 1999, 2011
Squad: Cyril Baille, Demba Bamba, Jefferson Poirot, Dany Priso, Emerick Setiano, Rabah Slimani, Camille Chat, Guilhem Guorado, Peato Mauvaka, Paul Gabrillagues, Arhur Iturria, Felix Lambey, Romain Taofifenua, Sebastien Vahaamahina, Gregory Alddritt, Yacouba Camara, Francois Cros, Wenceslas Lauret, Bernard Le Roux, Charles Ollivon, Louis Picamoles, Antoine Dupont, Maxime Machenaud, Baptiste Serin, Anthony Bellaeu, Camille Lopez, Romain Ntamack, Geoffrey Doumayrou, Gael Fickou, Wesley Fofana, Sofiane Guitoune, Damian Penaud, Yoann Huget, Alivereti Raka, Vincent Rattez, Maxime Medard, Thomas Ramos.
Georgia
Coach: Mamuka Gorgodze
Captain: Merab Sharikadze
Best finish: Pools 2003, 2007, 2011, 2015
Squad: Mikheil Nariashvili, Guram Gogichashvili, Shalva Mamukashvili, Jaba Bregvadze, Vano Karkadze, Levan Chilachava, Giorgi Melikidze, Beka Gigashvili, Giorgi Nemsadze, Shalva Sutiashvili, Mamuka Gorgodze, Kote Mikautadze, Giorgi Tkhilaishvili, Lasha Lomidze, Otar Giorgadze, Beka Gorgadze, Beka Saghinadze. Sandro Todua, Soso Matiashvili, Mirian Modebadze, Zurab Dzneladze, Davit Katcharava, Merab Sharikadze, Tamaz Mtchedlidze, Giorgi Kveseladze, Lasha Malaghuradze, Lasha Khmaladze, Tedo Abzhandadze, Giorgi Begadze, Vasil Lobzhanidze, Gela Aprasidze.
Ireland
Coach: Joe Shcmidt
Captain: Rory Best
Best finish: Quarterfinals 1987, 1991, 1995, 2003, 2011, 2015
Squad: CJ Stander, Josh van der Flier, Peter O'Mahony, Rhys Ruddock, Jack Conan, Tadhg Beirne, Jean Kleyn, Iain Henderson, James Ryan, Rory Best, Niall Scannell, Sean Cronin, Tadhg Furlong, Andrew Porter, Cian Healy, Dave Kilcoyne, John Ryan, Rob Kearney, Keith Earls, Andrew Conway, Jordan Larmour, Chris Farrell, Robbie Henshaw, Garry Ringrose, Bundee Aki, Jacob Stockdale, Johnny Sexton, Joey Carbery, Jack Carty, Conor Murray, Luke McGrath.
Italy
Coach: Conor O'Shea
Captain: Sergio Parisse
Best finish: Pools 1987, 1991, 1995, 1999, 2003, 2007, 2011, 2015
Squad: Simone Ferrari, Andrea Lovotti, Tiziano Pasquali, Nicola Quaglio, Marco Riccioni, Federico Zani, Luca Bigi, Oliviero Fabiani, Leonardo Ghiraldini, Dean Budd, Federico Ruzza, David Sisi, Alessandro Zanni, Maxime Mbanda, Sebastian Negri, Sergio Parisse, Jake Polledri, Abraham Steyn. Callum Braley, Guglielmo Palazzani, Tito Tebaldi, Tommaso Allan, Carlo Canna, Tommaso Benvenuti, Michele Campagnaro, Luca Morisi, Mattia Bellini, Giulio Bisegni, Jayden Hayward, Matteo Minozzi, Edoardo Padovani.
Japan
Coach: Jamie Joseph
Captain: Michael Leitch
Best finish: Pools 1987, 1991, 1995, 1999, 2003, 2007, 2011, 2015
Squad: Michael Leitch, Keita Inagaki, Yusuke Kizu, Jiwon Koo, Isileli Nakajima, Asaeli Valu, Takuya Kitade, Atsushi Sakate, Shota Horie, Luke Thompson, Wimpie van der Walt, Uwe Helu, James Moore, Hendrik Tui, Yoshitaka Tokunaga, Pieter Labuschagne, Kazuki Himeno, Amanaki Mafi. Kaito Shigeno, Fumiaki Tanaka, Yutaka Nagare, Yu Tamura, Rikiya Matsuda, Kenki Fukuoka, Ataata Moeakiola, Lomano Lemeki, William Tupou, Ryoto Nakamura, Timothy Lafaele, Kotaro Matsushima, Ryohei Yamanaka.
Namibia
Coach: Phil Davies
Captain: Renaldo Bothma
Best finish: Pools 1999, 2003, 2007, 2011, 2015
Squad: Andre Rademeyer, Nelius Theron, Desiderius Sethie, AJ de Klerk, Johannes Coetzee, Obert Nortje, Louis van der Westhuizen, Torsten van Jaarsveld, Tjiuee Uanivi, Johan Retief, Thomasau Forbes, Rohan Kitshoff, Max Katjijeko, Prince Gaoseb, Wian Conradie, PJ van Lill, Adriaan Booysen, Janco Venter, Cliven Loubser, Helarius Kisting, Damian Stevens, Eugene Jantjies, Darryl de la Harpe, Johan Deysel, Justin Newman, JC Greyling, Johann Tromp, Chad Plato, Lesley Klim, Janry du Toit, PJ Walters.
New Zealand
Coach: Steve Hansen
Captain: Kieran Read
Best finish: World Cup Champions 1987, 2011, 2015
Squad: Jordie Barrett, Ben Smith, Sevu Reece, George Bridge, Rieko Ioane, Jack Goodhue, Anton Lienert-Brown, Ryan Crotty, Sonny Bill Williams, Beauden Barrett, Richie Mo'unga, Aaron Smith, TJ Perenara, Brad Weber. Kieran Read (capt), Ardie Savea, Sam Cane, Matt Todd, Luke Jacobson, Scott Barrett, Sam Whitelock, Brodie Retallick, Patrick Tuipulotu, Nepo Laulala, Angus Ta'avao, Ofa Tu'ungafasi, Joe Moody, Atu Moli, Dane Coles, Codie Taylor, Liam Coltman.
Russia
Coach: Lyn Jones
Captain: Vasily Artemyev
Best finish: Pools 2011
Squad: Azamat Bitiev, Andrey Garbuzov, Kirill Gotovtsev, Victor Gresev, Bogdan Fedotko, Vitaliy Zhivatov, Evgeny Matveev, Andrey Polivalov, Vladimir Podrezov, Evgeny Yelgin, Stanislav Selsky, Nikita Vavilin, Sergey Chernyshev, Tagir Gadzhiev, Roman Khodin, Andrei Ostrikov, Valery Morozov, Anton Sychev, Vasily Artemyev, Igor Galinovsky, Kirill Golosnitsky, Vasily Dorofeev, Yuri Kushnarev, German Davydov, Dmitry Perov, Vladislav Sozonov, Dmitry Gerasimov, Ramil Gaysin, Denis Simplikevich, Vladimir Ostroushko, Sergey Yanyushkin.
Samoa
Coach: Steve Jackson
Captain: Chris Vui
Best finish: Quarterfinals 1991, 1995
Squad: Ed Fidow, Tim Nanai-Williams, Ahsee Tuala, Belgium Tuatagaloa, Henry Taefu, Alapati Leiua, Reynold Lee-Lo, Kieron Fonotia, AJ Atatimu, Tusi Pisi, Ulupano Seuteni, Dwayne Polotaivao, Melani Matavao, Scott Malolua, Afaesetiti Amosa, TJ Ioane, Jack Lam, Piula Fa'asalele, Josh Tyrell, Chris Vui, Teofilo Paulo, Kane Leaupepe, Senio Toleafoa, Michael Alaalatoa, Paul Alo-Emile, James Lay, Jordan Lay, Logovi'i Mulipola, Motu Matu'u, Ray Niuia, Seilala Lam.
Scotland
Coach: Gregor Townsend
Captain: Stuart McInally
Best finish: Semifinals 1991
Squad: John Barclay, Simon Berghan, Fraser Brown, Scott Cummings, Allan Dell, Zander Fagerson, Grant Gilchrist, Jonny Gray, Stuart McInally, WP Nel, Gordon Reid, Jamie Ritchie, Blade Thomson, Ben Toolis, George Turner, Hamish Watson, Ryan Wilson, Darcy Graham, Chris Harris, Adam Hastings, Stuart Hogg, George Horne, Peter Horne, Sam Johnson, Blair Kinghorn, Greig Laidlaw, Sean Maitland, Ali Price, Finn Russell, Tommy Seymour, Duncan Taylor.
South Africa
Coach: Rassie Erasmus
Captain:
Best finish: World Cup champions 1995, 2007
Squad: Schalk Brits, Malcolm Marx, Bongi Mbonambi, Steven Kitshoff, Vincent Koch, Frans Malherbe, Tendai Mtawarira, Trevor Nyakane, Lood de Jager, Eben Etzebeth, Franco Mostert, RG Snyman, Pieter-Steph du Toit, Francois Louw, Siya Kolisi, Kwagga Smith, Duane Vermeulen. Faf de Klerk, Herschel Jantjies, Cobus Reinach, Elton Jantjies, Handre Pollard, Lukhanyo Am, Damian de Allende, Jesse Kriel, Frans Steyn, Makazole Mapimpi, Sbu Nkosi, Cheslin Kolbe, Warrick Gelant, Willie le Roux
Tonga
Coach: Toutai Kefu
Captain:
Best finish: Pools 1987, 1995, 1999, 2003, 2007, 2011, 2015
Squad: Siegfried 'Fisiihoi, Vunipola Fifita, Latu 'Talakai, Paula 'Ngauamo, Sosefo 'Sakalia, Siua Maile, Siua 'Halanukonuka, Ma'afu Fia, Ben Tameifuna, Sam Lousi, Leva Fifita, Sitiveni Mafi, Sione Kalamafoni, Maama 'Vaipulu, Fotu 'Lokotui, Zane 'Kapeli, Dan Faleafa, Nasi Manu, Sonatane Takulua, Leon 'Fukofuka, Samisoni Fisilau, Kurt Morath, James 'Faiva, Siale Piutau, Malietoa Hingano, Nafi Tuitavake, Atieli Pakalani, David Halaifonua, Viliami Lolohea, Cooper Vuna, Telusa Veainu.
Uruguay
Coach: Esteban Meneses
Captain:
Best finish: Pools 1999, 2003, 2015
Squad: Agustin Ormaechea, Santiago Arata, Felipe Berchesi, Felipe Etcheverry, Juan Manuel Cat, Santiago Vilaseca, Agustin Della Corte, Tomas Inciarte, Federico Favaro, Nicolas Freitas, Leandro Leivas, Gaston Mieres, Rodrigo Silva, Facundo Gattas, Joaquin Jaunsolo, Mateo Sanguinetti, German Kessler, Guillermo Pujadas, Diego Arbelo, Juan Echeverria, Juan Pedro Rombys, Ignacio Dotti, Manuel Leindekar, Diego Magno, Franco Lamana, Manuel Ardao, Santiago Civetta, Manuel Diana, Juan Manuel Gaminara (captain), Juan Diego Ormaechea, Alejandro Nieto.
United States
Coach: Gary Gold
Captain: Blaine Scully
Best finish: Pools 1987, 1991, 1999, 2003, 2007, 2011, 2015
Squad: David Ainu'u, Malon Al-Jiboori, Nate Brakeley, Nick Civetta, Cam Dolan, Dylan Fawsitt , Eric Fry, Hanco Germishuys, James Hilterbrand, Olive Kilifi, Tony Lamborn, Titi Lamositele, Ben Landry Lo, Paul Mullen, Gregory Peterson, Ben Pinkelman, John Quill, Joseph Taufete'e. Blaine Scully, Nate Augspurger, Marcel Brache, Bryce Campbell, Shaun Davies, Ruben De Haas, Will Hooley, Martin Iosefo, Paul Lasike, AJ MacGinty, Will Magi, Thretton Palamo, Mike Te'o.
Wales
Coach: Warren Gatland
Captain: Alun-Wyn Jones
Best finish: Semifinals 1987, 2011
Squad: Jake Ball, Adam Beard, Rhys Carre, James Davies, Elliot Dee, Ryan Elias, Tomas Francis, Cory Hill, Alun Wyn Jones, Wyn Jones, Dillon Lewis, Ross Moriarty, Josh Navidi, Ken Owens, Aaron Shingler, Nicky Smith, Justin Tipuric, Aaron Wainwright, Josh Adams, Hallam Amos, Dan Biggar, Aled Davies, Gareth Davies, Jonathan Davies, Leigh Halfpenny, George North, Hadleigh Parkes, Rhys Patchell, Owen Watkin, Liam Williams, Tomos Williams.