A number of Blues will be in action for their countries over the next week, with several big qualifying matches for next year's FIFA World Cup taking place on both sides of the Atlantic.
Those looking to book their place at the 2026 World Cup are in very different stages of their qualifying campaigns. In South America, the final qualification matches take place during the forthcoming international break, with Argentina, Brazil and Ecuador having already secured their places at the tournament.
In Europe, several groups are reaching the halfway stage in qualifying, while our Danish, French, Portuguese and Spanish internationals are among those playing their first matches this week.
That is in addition to the start of qualifying for the next UEFA European Under-21 Championship and a number of mini-tournaments for our younger players.
You can see a full breakdown of the Chelsea players called up by their countries and the games they will be hoping to feature in below. All kick-off times and dates are for the UK (BST).
Brazil
After helping Chelsea to triumph at the FIFA Club World Cup, Andrey Santos joins Estevao Willian and Joao Pedro in Brazil's senior squad for their final two qualifying matches. They need to better Ecuador's results to finish second in the table.
Brazil vs ChileFIFA World Cup qualifying
Estadio Jornalista Mario Filho, Rio de Janeiro
Friday 5 September
1.30am
Bolivia vs BrazilFIFA World Cup qualifying
Estadio Hernando Siles, La Paz
Wednesday 10 September
12.30am
Denmark
Filip Jorgensen has been selected by Denmark as they kick off their World Cup qualifying campaign on home soil.
Denmark vs ScotlandFIFA World Cup qualifying
Parken, Copenhagen
Friday 5 September
7.45pm
Greece vs DenmarkFIFA World Cup qualifying
Stadio Georgios Karaiskakis, Piraeus
Monday 8 September
7.45pm
Ecuador
Moises Caicedo and Ecuador will be hoping to cap an impressive World Cup qualifying campaign by edging out Brazil for second place. Both go into these last two games level on points, with Ecuador ahead on goal difference.
Paraguay vs EcuadorFIFA World Cup qualifying
Defensores del Chaco, Asuncion
Friday 5 September
12.30am
Ecuador vs ArgentinaFIFA World Cup qualifying
Estadio Olimpico Atahualpa, Quito
Wednesday 10 September
12am
England
Reece James is our sole representative in Thomas Tuchel's England squad this time around, as the Three Lions look to continue their 100 per cent record in World Cup qualifying and extend their four-point lead at the top of Group K.
England vs AndorraFIFA World Cup qualifying
Villa Park, Birmingham
Saturday 6 September
5pm
Serbia vs EnglandFIFA World Cup qualifying
Stadion Rajko Mitic, Belgrade
Tuesday 9 September
7.45pm
France
Malo Gusto returned to the senior France squad two years after his first cap to feature in both their matches in June's UEFA Nations League finals, and he retains his place for the start of Les Bleus World Cup qualifying campaign.
That begins in Wroclaw, Poland, scene of Chelsea's UEFA Conference League final victory earlier this year.
Ukraine vs FranceFIFA World Cup qualifying
Tarczynski Arena, Wroclaw
Friday 5 September
7.45pm
France vs IcelandFIFA World Cup qualification
Parc des Princes, Paris
Tuesday 9 September
7.45pm
Portugal
After helping Portugal triumph in the Nations League finals during the last international break, Pedro Neto is in the squad again as they begin World Cup qualifying with a pair of away trips to Eastern Europe.
Armenia vs HungaryFIFA World Cup qualifying
Republican Stadium, Yerevan
Saturday 6 September
5pm
Hungary vs PortugalFIFA World Cup qualifying
Puskas Arena, Budapest
Tuesday 9 September
7.45pm
Spain
Beaten Nations League finalists Spain have Marc Cucurella in their squad again as they also begin World Cup qualifying with back-to-back away games.
Bulgaria vs SpainFIFA World Cup qualifying
Vasil Levski, Sofia
Thursday 4 September
7.45pm
Turkiye vs SpainFIFA World Cup qualifying
Ataturk Olympic Stadium, Istanbul
Sunday 7 September
7.45pm
England Under-21s
It was only a little over two months ago that England won the last UEFA European Under-21 Championship, but qualifying for the 2027 edition is already getting underway.
Josh Acheampong, Tyrique George and Jamie Gittens are part of the England squad who will begin their defence of the trophy in Kazakhstan.
Kazakhstan vs England Under-21sUEFA European Under-21 Championship qualifying
Ortalyq Stadion, Almaty
Monday 8 September
4pm
Portugal Under-21s
Portugal were eliminated in the quarter-finals of the summer's European Under-21 Championship, but Dario Essugo and his countrymen will be hoping to make a winning start to qualifying.
Portugal Under-21s vs AzerbaijanUEFA European Under-21 Championship qualifying
Estadio Cidade de Barcelos, Barcelos
Friday 5 September
7.30pm
Scotland vs Portugal Under-21sUEFA European Under-21 Championship qualifying
Fir Park, Motherwell
Tuesday 9 September
7pm
Sweden Under-21s
Genesis Antwi has received his first call-up from Sweden at Under-21s level, as they begin their qualifying campaign for the 2027 tournament at home.
Sweden Under-21s vs ArmeniaUEFA European Under-21 Championship qualifying
Falcon Alkoholfri Arena, Falkenberg
Friday 5 September
5pm
Montenegro vs Sweden Under-21sUEFA European Under-21 Championship qualifying
Stadion Pod Goricom, Podgorica
Tuesday 9 September
7pm
England Under-20s
Ted Curd, Harrison McMahon and Harrison Murray-Campbell have all been chosen by England for a high-profile youth friendly during the September break.
England Under-20s vs ItalyFriendly
SMH Group Stadium, Chesterfield
Friday 5 September
7.30pm
Portugal Under-20s
Leo Cardoso and Portugal have the chance to overtake Italy to third spot in the Under-20 Elite League table, before ending this international window with a friendly.
Portugal Under-20s vs CzechiaElite League
Estadio Nacional, Oeiras
Thursday 4 Septmber
6.30pm
Poland vs Portugal Under-20sFriendly
Stadion Wigry Suwalki, Suwalki
Tuesday 9 September
1.30pm
England Under-19s
Shumaira Mheuka is the only Chelsea player in the England Under-19s squad, after Jesse Derry was forced to withdraw, and they embark on a three-game trip to Spain.
England Under-19s vs UkraineFriendly
Pinatar Arena, Murcia
Wednesday 3 September
10am
Spain vs England Under-19sFriendly
Pinatar Arena, Murcia
Saturday 6 September
10am
England Under-19s vs NetherlandsFriendly
Pinatar Arena, Murcia
Tuesday 9 September
11.30pm
Republic of Ireland Under-19s
Harry McGlinchey has been selected by the Republic of Ireland for two friendlies at France's famed Clairefontaine youth academy.
France vs Republic of Ireland Under-19sFriendly
Centre National du Football, Clairefontaine
Friday 5 September
3pm
France vs Republic of Ireland Under-19sFriendly
Centre National du Football, Clairefontaine
Monday 8 September
10am
England Under-18s
A late call-up for Landon Emenalo sees him join fellow Blues Freddy Bernal, Chizaram Ezenwata and Reggie Walsh in the England Under-18s squad for their own international camp in Spain.
England Under-18s vs UzbekistanFriendly
Estadio Antonio Barbadillo, Cadiz
Wednesday 3 September
4pm
England Under-18s vs MoroccoFriendly
Estadio Antonio Barbadillo, Cadiz
Saturday 6 September
4pm
England Under-18s vs CanadaFriendly
Estadio Antonio Barbadillo, Cadiz
Tuesday 9 September
11am
England Under-17s
Calvin Diakite, Mathis Eboue, Ryan Kavuma-McQueen and Mahdi Nicoll-Jazuli are all heading to Germany for a series of friendlies with England Under-17s.
England Under-17s vs VenezuelaFriendly
Leichtathletikstadion, Duisburg
Wednesday 3 September
2pm
England Under-17s vs IsraelFriendly
Leichtathletikstadion, Duisburg,
Saturday 6 September
2pm
Germany vs England Under-17sFriendly
Leichtathletikstadion, Duisburg
Tuesday 9 September
10am
Morocco Under-17s
Ibrahim Rabbaj has been selected by Morocco for a mini-tournament in Spain, which will likely include a meeting with some of his fellow Blues when they face England.
Morocco Under-17s vs CanadaFriendly
Estadio Antonio Barbadillo, Cadiz
Thursday 4 September
3pm
Morocco Under-17s vs EnglandFriendly
Estadio Antonio Barbadillo, Cadiz
Saturday 6 September
4pm
Morocco Under-17s vs UzbekistanFriendly
Estadio Antonio Barbadillo, Cadiz
Tuesday 9 September
5pm