The 2015 mid-year rugby union internationals (also known as the Summer internationals in the Northern Hemisphere) refer to international rugby union matches that were mostly played in the Southern Hemisphere.

Because of the 2015 Rugby World Cup, no test series took place. This allowed the European season to finish two weeks later, with the final of the 2014–15 Top 14 season taking place on 13 June. The 2015 Super Rugby season was able to run for 21 consecutive weeks, without the three-week international break in June, to allow an earlier and shortened 2015 Rugby Championship.

Although the international window did not take place, some nations participating in the World Cup opted to play uncapped matches in preparation for the tournament. Uruguay hosted Fiji's A side, the Fiji Warriors in Montevideo, with the Warriors playing Argentina's A-side Argentina Jaguars, between the two fixtures. With Russia not competing in the 2015 Rugby World Cup, or either of World Rugby's Nations Cup or Tbilisi Cup, they toured Namibia for a two-test series.

Three historic matches also took place. Samoa hosted New Zealand in Apia for the first time as an official test match, the first Pacific nation to do so. Kenya played two test matches, against Portugal and Spain. Portugal became the first European side to visit Kenya for an official test match.

Fixtures 23 May

Team details FB 15Santiago GibernauRW 14Leandro LeivasOC 13Joaquín PradaIC 12Alberto RománLW 11Francisco BulantiFH 10Jerónimo EtcheverrySH 9 Rodrigo SilvaN8 8 Agustín AlonsoOF 7 Diego MagnoBF 6 Fernando BascouRL 5 Jorge ZerbinoLL 4 Santiago Vilaseca (c)TP 3 Mario SagarioHK 2 Germán KesslerLP 1 Mateo SanguinettiReplacements:HK 16Carlos Arboleya PR 17Alejo CorralPR 18Oscar DuránLK 19Mathias PalomequeFL 20Matias BeerLK 21Mathias BraunSH 22Alejo DuránFH 23Manuel BlengioCoach: Pablo Lemoine FB 15Tikilaci VuibauRW 14Sam SpeightOC 13John StewartIC 12Eroni VasiteriLW 11Nacani WakayaFH 10Kini DouglasSH 9 Serupepeli VularikaN8 8 Johnny Dyer OF 7 Meli BaivatuBF 6 Apisai NaikatiniRL 5 Mataiasi UcutabuaLL 4 Savenaca TabakanalagiTP 3 Taniela KoroiHK 2 Sireli Ledua (c)LP 1 Peni RavaiReplacements:PR 16Seru TabaiwaluHK 17Kirwan Sanday PR 18Joeli VeitayakiN8 19Jolame BeraFL 20Malakai NamaloSH 21Emori WaqaCE 22Saimoni TuilaucalaFB 23Kitione RatuCoach: Senirusi Seruvakula Touch judges: Jason Mola (Argentina) Esteban Filipanics (Argentina) Notes: Uruguay gave this match Test Match status and awarded caps in this match.

27/28/30/31 May

Team details FB 15Santiago CorderoRW 14Tomás CarrióOC 13Jerónimo de la FuenteIC 12Gabriel AscárateLW 11Román MirallesFH 10Santiago González IglesiasSH 9 Martín Landajo (c)N8 8 Facundo IsaOF 7 Javier Ortega Desio BF 6 Tomás LezanaRL 5 Gerónimo AlbertarioLL 4 Guido PettiTP 3 Bruno PostiglioniHK 2 Santiago Iglesias ValdezLP 1 Lucas Noguera PazReplacements:PR 16Julián MontoyaHK 17Matías CortesePR 18Santiago García BottaLK 19Manuel PlazaFL 20Lisandro Ahualli de ChazalSH 21Gonzalo BertranouFH 22Juan León NovilloCE 23Brian OrmsonCoach: Daniel Hourcade FB 15Tikilaci VuibauRW 14Sam SpeightOC 13John Stewart IC 12Eroni VasiteriLW 11Nacani WakayaFH 10Emori WaqaSH 9 Serupepeli VularikaN8 8 Jolame BeraOF 7 Johnny DyerBF 6 Timoci SauvoliRL 5 Apisai NaikatiniLL 4 Savenaca TabakanalagiTP 3 Kirwan SandayHK 2 Sireli Ledua (c)LP 1 Peni RavaiReplacements:PR 16Jale SassenHK 17Joeli VeitayakiPR 18Lee-Roy AtalifoLK 19Mataiasi UcutabuaFL 20Meli BaivatuFH 21Kini DouglasCE 22Saimoni TuilaucalaWG 23Josaia QumiCoach: Senirusi Seruvakula Touch judges: Francisco González (Uruguay) José Covassi (Argentina)

Team details FB 15Rob KearneyRW 14David KearneyOC 13Collie O'Shea IC 12Luke Marshall LW 11Craig GilroyFH 10Ian MadiganSH 9 Eoin Reddan N8 8 Jamie Heaslip (c)OF 7 Chris Henry BF 6 Robbie Diack RL 5 Dan Tuohy LL 4 Devin TonerTP 3 Tadhg Furlong HK 2 Richardt Strauss LP 1 Jack McGrath Replacements:HK 16Rob Herring PR 17Michael Bent PR 18Mike Ross LK 19Ben Marshall FL 20Jordi Murphy SH 21Luke McGrath FH 22Paddy Jackson WG 23Cian Kelleher Coach: Joe Schmidt FB 15 Zane KirchnerRW 14 Alex CuthbertOC 13 Joe Rokocoko IC 12 Wynand OlivierLW 11 David SmithFH 10 Jimmy GopperthSH 9 Ruan PienaarN8 8 Koliniasi Holani OF 7 Gerhard VoslooBF 6 Shane Jennings (c)RL 5 Konstantin MikautadzeLL 4 Rodrigo Capó Ortega TP 3 Adam JonesHK 2 Deon Fourie LP 1 Roberto Tejerizo Replacements:HK 16 Dave Ward PR 17 Saimone Taumoepeau PR 18 Matías DíazLK 19 Nathan Hines FL 20 George Smith SH 21 Tomás CubelliFH 22 Tusi PisiFB 23 Gio Aplon Coach: Robbie Deans Man of the Match: Deon Fourie (Barbarians)

Touch judges: David Wilkinson (Ireland) Andy Brace (Ireland) Television match official: Dermot Moloney (Ireland) Notes: This was Nathan Hines and Shane Jennings last professional match.

Team details FB 15Sammy OliechRW 14Darwin MukidzaOC 13Fabian OlandoIC 12Kelvin OmiyoLW 11Jacob OjeeFH 10Isaac AdimoSH 9 Lyle AsiligwaN8 8 Joshua ChisangaOF 7 Michael OkombeBF 6 Brian Nyikuli (c)RL 5 Emmanuel MavalaLL 4 Oliver Mang’eniTP 3 Curtis LilakoHK 2 Sammy WaruiLP 1 Moses AmusalaReplacements:HK 16Peter KariaPR 17Duncan MwangiPR 18Isaiah NyarikiLK 19Martin OwillahFL 20Ronnie MwenesiSH 21Robert AringoFH 22Vincent MoseWG 23Dennis MuhanjiCoach: Jerome Paarwater FB 15António FerradorRW 14Tomás AppletonOC 13Manuel PereiraIC 12Adrien TimoteoLW 11Tomás NoronhaFH 10Yannick RicardoSH 9 Maxime TonietaN8 8 Gonçalo UvaOF 7 Vasco Uva (c)BF 6 Thibault FreitasRL 5 David dos ReisLL 4 Eric dos SantosTP 3 Tony MartinsHK 2 Miguel VilaçaLP 1 Jorge SeguradoReplacements:HK 16Duarte DinizPR 17Francisco DominguesPR 18Anthony AlvesLK 19Diogo ToornFL 20Filipe PereiraSH 21André AquinoFH 22João Diogo SilvaCE 23João SilvaCoach: João Luís Pinto Touch judges: Godwin Karuga (Kenya) John Bosco Muamba (Kenya) Notes: Vasco Uva earned his 100th test cap.

Team details FB 15Mathew Tait RW 14Christian WadeOC 13Elliot DalyIC 12Henry SladeLW 11Marland Yarde FH 10Danny CiprianiSH 9 Lee Dickson (c) N8 8 Josh BeaumontOF 7 Jack CliffordBF 6 Mark WilsonRL 5 Joe Launchbury LL 4 Ed Slater TP 3 Kieran Brookes HK 2 Luke Cowan-Dickie LP 1 Matt Mullan Replacements:HK 16Tommy Taylor PR 17Alex Waller PR 18Gareth Denman LK 19James Gaskell FL 20Jon Fisher SH 21Will Chudley FH 22Shane Geraghty WG 23Alex Lewington Coach: Stuart Lancaster FB 15 Gio Aplon RW 14 David SmithOC 13 Joe RokocokoIC 12 Wynand Olivier LW 11 Ugo MonyeFH 10 Tusi PisiSH 9 Tomás Cubelli N8 8 Thomas Waldrom OF 7 George SmithBF 6 George Whitelock RL 5 Brad Thorn (c) LL 4 Samu ManoaTP 3 Matías Díaz HK 2 Dave Ward LP 1 Saimone Taumoepeau Replacements:HK 16 Deon Fourie PR 17 Roberto Tejerizo PR 18 Adam Jones LK 19 Nathan HinesFL 20 Pablo Matera SH 21 Ruan Pienaar FH 22 Stephen Brett WG 23 Yoshikazu Fujita Coach: Robbie Deans Man of the Match: Danny Cipriani (England)

Touch judges: Luke Pearce (England) Paul Dix (England) Television match official: Sean Davey (England) Notes: This was Ugo Monye's and Brad Thorn's last professional match. This was England's largest winning margin over the Barbarians, surpassing the 31 point winning margin recorded in May 2012. This was the Barbarians largest ever defeat. It was previously the 59–8 loss to the British and Irish Lions during the 2013 British and Irish Lions tour to Australia.

Team details FB 15Rodrigo SilvaRW 14Francisco BulantiOC 13Santiago GibernauIC 12Alberto RománLW 11Joaquín PradaFH 10Manuel BlengioSH 9 Agustín OrmaecheaN8 8 Agustín AlonsoOF 7 Diego MagnoBF 6 Matías Beer RL 5 Jorge ZerbinoLL 4 Santiago Vilaseca (c)TP 3 Mario SagarioHK 2 Nicolás KlappenbachLP 1 Alejo CorralReplacements:PR 16Oscar DuránHK 17German KesslerPR 18Mateo SanguinettiLK 19Mathias PalomequeFL 20Fernando BascouLK 21Mathias BraunSH 22Alejo DuránCE 23Andrés VilasecaCoach: Pablo Lemoine FB 15Tikilaci VuibauRW 14Nacani WakayaOC 13John StewartIC 12Eroni Vasiteri (c)LW 11Josaia QuminakeloFH 10Kini DouglasSH 9 Serupepeli Vularika N8 8 Johnny Dyer OF 7 Jolame BeraBF 6 Timoci SauvoliRL 5 Savenaca TabakanalagiLL 4 Apisai NaikatiniTP 3 Lee-Roy AtalifoHK 2 Jale SassenLP 1 Peni RavaiReplacements:HK 16Sireli LeduaPR 17Joeli VeitayakiPR 18Taniela KoroiLK 19Mataiasi UcutabuaFL 20Malakai NamaloSH 21Emori WaqaCE 22Saimoni TuilaucalaWG 23Sam SpeightCoach: Senirusi Seruvakula Touch judges: Damian Schneider (Argentina) Pablo Deluca (Argentina) Notes: Uruguay gave this match Test Match status, and awarded caps in this match.

20 June

Team details FB 15Román MirallesRW 14Joaquín Tuculet OC 13Matías MoroniIC 12Jerónimo de la Fuente LW 11Santiago CorderoFH 10Juan Pablo SocinoSH 9 Tomás Cubelli (c) N8 8 Benjamín Macome OF 7 Javier Ortega DesioBF 6 Tomás Lezana RL 5 Matías AlemannoLL 4 Guido PettiTP 3 Nahuel Tetaz Chaparro HK 2 Matías Cortese LP 1 Lucas Noguera Paz Replacements:HK 16Santiago Iglesias Valdez PR 17Matías Díaz N8 18Facundo Isa PR 19Bruno Postiglioni FL 20Lisandro Ahualli de Chazal SH 21Martín Landajo FH 22Santiago González Iglesias WG 23Belisario Agulla Coach: Daniel Hourcade FB 15 Gaëtan GermainRW 14 Julien Jané OC 13 Henry ChavancyIC 12 Julien ReyLW 11 Benjamin LapeyreFH 10 Benjamín Urdapilleta SH 9 Heini Adams (c) N8 8 Virgile Bruni OF 7 Karim GhezalBF 6 Julien TastetRL 5 Jocelino Suta LL 4 Thibault Lassalle TP 3 Walter Desmaison HK 2 Jean-Charles Orioli LP 1 Lucas Pointud Replacements:HK 16 Brice Mach PR 17 Antoine Tichit PR 18 Jean-Baptiste Poux FH 19 Gilles Bosch WG 20 Silvère Tian FL 21 Benoit Guyot SH 22 Jérôme Fillol LK 23 Arnaud Méla Coach: Fabrice Landreau Philippe Rouge-Thomas Touch judges: Ben O'Keeffe (New Zealand) Joaquín Montes (Uruguay)

26 June

Team details FB 15Román Miralles RW 14Matías MoroniOC 13Jerónimo de la FuenteIC 12Juan Pablo SocinoLW 11Tomás CarrióFH 10Santiago González Iglesias SH 9 Martín Landajo (c) N8 8 Facundo IsaOF 7 Javier Ortega DesioBF 6 Pablo Matera RL 5 Tomás LavaniniLL 4 Guido Petti TP 3 Matías Díaz HK 2 Julián Montoya LP 1 Lucas Noguera Paz Replacements:HK 16Santiago Iglesias Valdez PR 17Bruno Postiglioni PR 18Nahuel Tetaz Chaparro LK 19Matías Alemanno N8 20Benjamín Macome SH 21Tomás Cubelli FH 22Nicolás Sánchez FB 23Lucas González Amorosino Coach: Daniel Hourcade FB 15 Geoffrey PalisRW 14 Benjamin LapeyreOC 13 Henry Chavancy IC 12 Jonathan DantyLW 11 Silvère TianFH 10 Benjamín Urdapilleta SH 9 Jérôme Fillol (c) N8 8 Virgile BruniOF 7 Pierre Rabadan BF 6 Antoine BurbanRL 5 Arnaud Méla LL 4 Thibault LassalleTP 3 Jean-Baptiste Poux HK 2 Brice Mach LP 1 Antoine Tichit Replacements:HK 16 Jean-Charles Orioli PR 17 Lucas Pointud PR 18 Walter Desmaison FH 19 Gilles Bosch FL 20 Julien Tastet SH 21 Heini Adams CE 22 Julien Rey LK 23 Jocelino Suta Coach: Fabrice Landreau Philippe Rouge-Thomas Touch judges: Angus Gardner (Australia) Joaquín Montes (Uruguay) Television match official: Pablo Deluca (Argentina)

8/11 July

Team details FB 15Tim Nanai-WilliamsRW 14Alofa Alofa OC 13Paul PerezIC 12Johnny Leota LW 11Alesana TuilagiFH 10Tusi Pisi SH 9 Kahn Fotuali'iN8 8 Ofisa Treviranus (c) OF 7 Jack LamBF 6 Alafoti Fa'osilivaRL 5 Kane ThompsonLL 4 Filo Paulo TP 3 Census Johnston HK 2 Ole Avei LP 1 Sakaria Taulafo Replacements:HK 16Manu Leiataua PR 17Viliamu Afatia PR 18Anthony Perenise LK 19Joe Tekori FL 20Maurie Fa'asavalu SH 21Pele Cowley CE 22Faialaga Afamasaga WG 23Ken Pisi Coach: Stephen Betham FB 15Israel Dagg RW 14George Moala OC 13Ryan CrottyIC 12Sonny Bill WilliamsLW 11Charles PiutauFH 10Dan CarterSH 9 Andrew Ellis N8 8 Kieran ReadOF 7 Richie McCaw (c)BF 6 Jerome Kaino RL 5 Sam Whitelock LL 4 Luke Romano TP 3 Owen Franks HK 2 Keven Mealamu LP 1 Tony Woodcock Replacements:HK 16Hika Elliot PR 17Wyatt Crockett PR 18Nepo Laulala LK 19Brodie Retallick FL 20Matt Todd SH 21Brad Weber FH 22Colin Slade CE 23Charlie Ngatai Coach: Steve Hansen Touch judges: Angus Gardner (Australia) Rohan Hoffmann (Australia) Television match official: George Ayoub (Australia) Notes: This was the first match played by New Zealand against a Pacific Island team in the Pacific, and they became the first SANZAR team to play in Apia.