{{Infoboks international fodboldturnering
| turneringsnavn = UEFA Champions League
| år = 2020–2021
| andre_turneringsnavne = 
| billede = Estadio do Dragao - panoramio (1).jpg
| billede_bredde = 
| billede_beskrivelse = Estadio do Dragao, hvor turneringens finale blev spillet
| værtsnation(er) = 
| dato(er) = 8. august – 30. september 2020 <small>(kvalifikation)</small><br />20. oktober 2020 – 29. maj 2021 <small>(hovedturnering)</small>
| antal_hold = 32 <small>(gruppespil)</small><br /> 79 <small>(kvalifikation)</small>
| antal_forbund = 54
| antal_stadion(er) = 
| antal_værtsby(er) = 
| vinder(e) = {{fbaicon|ENG}} [[Chelsea F.C.]]
| vinderens_titelantal = 2
| andenplads = {{fbaicon|ENG}} [[Manchester City]]
| tredjeplads = 
| fjerdeplads = 
| total_antal_kampe_spillet = 125<!--Starting from group stage, exclude qualifying rounds and play-off round-->
| total_antal_mål_scoret = 366<!--Starting from group stage, exclude qualifying rounds and play-off round-->
| total_antal_tilskuere = {{#expr: <!--Group A-->+ 3000 + 0 + 8196 + 0 + 8147 + 0 + 0 + 0 + 6759 + 0 + 0 + 0 <!--Group B-->+ 0 + 1000 + 10178 + 0 + 0 + 0 + 0 + 0 + 0 + 0 + 0 + 0 <!--Group C-->+ 0 + 0 + 2450 + 0 + 0 + 0 + 0 + 0 + 0 + 0 + 0 + 0 <!--Group D-->+ 0 + 132 + 0 + 0 + 132 + 0 + 0 + 0 + 0 + 0 + 0 + 147 <!--Group E-->+ 0 + 4973 + 10544 + 0 + 0 + 0 + 10554 + 0 + 8747 + 0 + 2000 + 0 <!--Group F-->+ 16682 + 1000 + 0 + 0 + 17427 + 0 + 0 + 0 + 0 + 0 + 10860 + 0 <!--Group G-->+ 14850 + 0 + 0 + 6171 + 0 + 18531 + 0 + 0 + 0 + 0 + 0 + 0 <!--Group H-->+ 0 + 999 + 350 + 577 + 350 + 0 + 545 + 0 + 0 + 638 + 0 + 0 <!--Round of 16 1st leg-->+ 0 + 0 + 0 + 0 + 0 + 0 + 0 + 0 <!--Round of 16 2nd leg-->+ 0 + 0 + 0 + 0 + 0 + 0 + 0 + 0 <!--Quarter-finals 1st leg-->+ 0 +  0 + 0 + 0 <!--Quarter-finals 2nd leg-->+ 0 + 0 + 0 + 0 <!--Semi-finals 1st leg-->+ 0 + 0 <!--Semi-finals 2nd leg-->+ 0 + 0 <!--Final-->+ 14110}}<!--Starting from group stage, exclude qualifying rounds and play-off round-->
| topscorer(e) = {{flagicon|NOR}} [[Erling Haaland]] ([[Borussia Dortmund]])<br />(6 mål)<!--Starting from group stage, exclude qualifying rounds and play-off round-->
| bedste_spiller = {{plainlist|
*''Målmand:''<br>{{flagicon|SEN}} [[Édouard Mendy]] ([[Chelsea F.C.|Chelsea]])<ref name="UCL goalkeeper">{{cite news|url=https://www.uefa.com/uefachampionsleague/news/026c-1317b1d16759-056f2e78eadd-1000--goalkeeper-of-the-season-mendy/|title=Champions League Goalkeeper of the Season: Edouard Mendy|website=UEFA.com|publisher=Union of European Football Associations|date=26. august 2021|access-date=26. august 2021}}</ref>
*''Forsvar:''<br>{{flagicon|POR}} [[Rúben Dias]] ([[Manchester City F.C.|Manchester City]])<ref name="UCL defender">{{cite news|url=https://www.uefa.com/uefachampionsleague/news/026c-1317b6ce9b50-6dbaaa42282d-1000--defender-of-the-season-ruben-dias/|title=Champions League Defender of the Season: Rúben Dias|website=UEFA.com|publisher=Union of European Football Associations|date=26. august 2021|access-date=26. august 2021}}</ref>
*''Midtbane:''<br>{{flagicon|FRA}} [[N'Golo Kanté]] ([[Chelsea F.C.|Chelsea]])<ref name="UCL midfielder">{{cite news|url=https://www.uefa.com/uefachampionsleague/news/026c-1317baf0a7ae-4e35592f18ad-1000--midfielder-of-the-season-kante/|title=Champions League Midfielder of the Season: N'Golo Kanté|website=UEFA.com|publisher=Union of European Football Associations|date=26. august 2021|access-date=26. august 2021}}</ref>
*''Angreb:''<br>{{flagicon|NOR}} [[Erling Haaland]] ([[Borussia Dortmund]])<ref name="UCL forward">{{cite news|url=https://www.uefa.com/uefachampionsleague/news/026c-1317bed66b10-0c90556ae125-1000--forward-of-the-season-haaland/|title=Champions League Forward of the Season: Erling Haaland|website=UEFA.com|publisher=Union of European Football Associations|date=26. august 2021|access-date=26. august 2021}}</ref>}}
| opdateret = 23. januar 2023
| forrige sæson = [[UEFA Champions League 2019-20|2019-20]]
| næste sæson = [[UEFA Champions League 2021-22|2021-22]]
}}
'''UEFA Champions League 2020-2021''' var den 66. sæson af [[UEFA Champions League]], arrangeret af [[UEFA]]. Det var den 29. sæson, siden turneringen blev omdøbt fra Mesterholdenes Europa Cup til UEFA Champions League.
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