Here are the events that you simply can’t afford to miss.
Your midweek dose of football... Champions League
It’s crunch time for the English clubs in the Champions League as they look to end the group stage on a high.
Defending champions Liverpool travel to Red Bull Salzburg and Chelsea host Lille on Tuesday 10 December while Jose Mourinho’s Tottenham travel to Munich to face Bayern and Manchester City visit Dinamo Zagreb on Wednesday 11 December.
European heavyweights Real Madrid, Barcelona, Bayern Munich, Borussia Dortmund, Juventus, Atletico Madrid and Paris Saint-Germain are all in action in Europe's premier competition, too.
The Champions League round of 16 draw is also live on BT Sport 1 HD and online on Monday 16 December at 10.45am.
BT Sport will also show every goal as it goes in on the Champions League Goals Show. James Richardson and a panel of experts will analyse all of the action as it happens every night.
And if you miss any of the action, subscribers can tune in to our exclusive live highlights show from 10.30pm on BT Sport 2 HD and online on both Champions League nights as we bring you the best bits of all the night’s action.
Your Saturday lunchtime feast… Premier League
The Premier League weekend officially begins on BT Sport – and there are four excellent offerings from the English top flight in December.
Frank Lampard takes his young Chelsea side to Merseyside to face Everton on Saturday 7 December, leaders Liverpool host struggling Watford on Saturday 14 December, Everton are again in action when they host Arsenal on Saturday 21 December and Manchester United travel to Burnley on Saturday 28 December.
Every game is live and exclusive on BT Sport 1 HD and in awe-inspiring high-definition on BT Sport Ultimate from 12pm.
BT Sport’s weekly build-up show Early Kick-Off will whet your appetite for BT Sport’s live game and the footballing weekend ahead.
Hosted by Robbie Savage, Jake Humphrey and Jules Breach, the 10am to midday show sets the agenda for the weekend to come and tackles all the major talking points.
BT Sport Score will follow every Premier League game, providing all the goals, news and analysis across the day’s action.
Your huge weekend of rugby... Champions Cup
BT Sport will broadcast two rounds from one of the most wide-open Champions Cup seasons in recent years in December.
Every single minute of Europe’s premier club competition will be available to watch live on BT Sport, including the knockout stages and the June 2020 final in Marseille.
BT Sport are broadcasting a mammoth 20 live games in December across two huge back-to-back weekends of rugby.
Can champions Saracens bounce back from the salary cap saga and replicate their imperious form of last season? Will the returning Rugby World Cup stars take the competition by storm?
If you miss any of the action, you can tune into the Champions Cup highlights show on Sunday 8 December and Sunday 15 December from 5.30pm on BT Sport 2 HD and online.
Your fight-night fix... Boxing
Unbeaten heavyweight sensation Daniel ‘Dynamite’ Dubois returns in a Christmas cracker of a show from London’s Copper Box Arena on Saturday 21 December.
The prodigious talent, 22, has stopped 12 of his 13 opponents so far and will next face Japan’s Kyotaro Fujimoto for the WBC Silver Championship exclusively live on BT Sport.
Light-heavyweight Tommy Fury will also fight for the first time since appearing on Love Island on the undercard of Dubois v Fujimoto.
Fury, 20, had two professional contests before entering the reality show and the Ricky Hatton trained Brit, brother of lineal heavyweight champion Tyson Fury, is looking to kick-start his boxing career on December 21.
And if that isn’t enough, Ultimate Boxxer 6 returns to Manchester on Friday 13 December for a heavyweight special on what promises to be an electrifying night of high-octane boxing.
The high-paced elimination tournament pits eight heavyweights against each other in a knockout format with four quarter-finals, two semi-finals and a final all on the same night where every bout is three rounds.
Your reason to stay up late... UFC
BT Sport is the exclusive home of the UFC in the UK and we’re bringing you three unmissable fight nights in December.
Christmas will come early for MMA fans when UFC 245 – featuring three monster world title fights – comes around on Saturday 14 December.
The welterweight title is on the line in a highly-anticipated grudge match between Kamaru Usman and Colby Covington, Max Holloway defends his featherweight strap against Alexander Volkanovski and Amanda Nunes takes on Germaine de Randamie on a jam-packed fight card from Las Vegas.
And the big-fight action doesn’t stop there! On Saturday 7 December Suriname’s Jairzinho Rozenstruik makes a quick turnaround after his UFC 244 win over Andrei Arlovski against Alistair Overeem in Washington.
Rozenstruik, unbeaten in the UFC after three contests, replaces Walt Harris who was forced to withdraw.
The final UFC offering of 2019 comes from South Korea when Korean Zombie takes on Brian Ortega on Saturday 21 December.
Also on BT Sport in December…
Matchday 6 featuring Man Utd, Arsenal, Wolves, Celtic and Rangers is live and exclusive on BT Sport. Can every British team qualify for the knockout stages? Watch the Round of 16 draw on Monday 16 December.
Australia wrap up their Test series against Pakistan in Adelaide before taking on New Zealand in two Tests matches. The Big Bash, one of the world’s most electrifying Twenty20 tournaments also begins in December.
The Gallagher Premiership has been blown wide open after Saracens’ salary cap sanctions. Will the champions become embroiled in a relegation scrap? Can anyone stop Exeter? Watch all the drama unfold on BT Sport.
One of the closest Scottish Premiership seasons in memory continues on BT Sport. Hearts v Celtic, Hibernian v Rangers and St. Mirren v Celtic are all exclusively live. Scottish Football Extra will round up all the big talking points.
Betfred Cup Final
Old Firm rivals Rangers and Celtic meet in the Betfred Cup final in what is sure to be a fiercely contested meeting at Hampden Park. Who will lift the first silverware of the season and earn derby day bragging rights on Sunday 8 December?
Tranmere Rovers v Chichester City and Solihull Moors v Rotherham United in the FA Cup second round are exclusively live on Sunday 1 December and Monday 2 December.
Top flight action from Germany and France is live and exclusive throughout December. Can Bayern Munich or Paris Saint-Germain be stopped? Find out only on BT Sport.
Fiorentina v Cittadella, Udinese v Bologna and Cagliari v Sampdoria in the fourth round of the Coppa Italia are live and exclusive on BT Sport on Tuesday 3 December, Wednesday 4 December and Thursday 5 December.
Serie A champions Juventus take on last season’s Coppa Italia winners Lazio at Riyadh’s King Saud University Stadium in Saudi Arabia. Watch live on Sunday 22 December.
Barnet v AFC Fylde, Solihull Moors v Barrow and Sutton United v Yeovil Town are live on BT Sport in November. Catch up on all of the action with the National League Highlights Show immediately after the game.