| Runner: | Kevin Krawietz Horia Tecău |
| Score: | 6–4, 6–2 |
| Type: | singles doubles |
| Before Year: | 2019 |
| Before Name: | Barcelona Open Banco Sabadell |
See main article: article and 2021 Barcelona Open Banc Sabadell.
Defending champions Juan Sebastián Cabal and Robert Farah successfully defended their title, defeating Kevin Krawietz and Horia Tecău in the final, 6–4, 6–2, to win the doubles tennis title at the 2021 Barcelona Open. The top seeds did not drop a set en route to their 18th career ATP Tour doubles title together. Krawietz and Tecău were in contention to win their first title as a team.[1]
