The International 2021

The International 2021, also known as The International 10 (TI10), was the tenth iteration of The International, an annual Dota 2 world championship esports tournament. Hosted by Valve, the game's developer, the tournament followed a year-long series of tournaments awarding qualifying points, known as the Dota Pro Circuit (DPC), with the top 12 ranking teams being directly invited to the tournament. In addition, six more teams earned invites through regional qualifiers held earlier in 2021. The tournament took place in Bucharest, Romania, with the main event held behind closed doors at the Arena Națională due to restrictions on gatherings in the city.

As with every International from 2013 onwards, the prize pool was crowdfunded by the Dota 2 community via its battle pass feature with the total reaching US$40 million, making it the largest esports prize pool in history. The event was also the first International held since 2019, as the 2020 iteration was cancelled due to the COVID-19 pandemic. The Grand Finals were held between PSG.LGD and Team Spirit, with the latter winning 3–2 in a best-of-five series.