| Champ: |  Sumit Nagal |
| Runner: |  Facundo Bagnis |
| Score: | 6–4, 6–2 |
| Type: | singles doubles |
| After Year: | 2021 |
See main article: 2019 Challenger de Buenos Aires.
Pablo Andújar was the defending champion[1] but chose not to defend his title.
Sumit Nagal won the title after defeating Facundo Bagnis 6–4, 6–2 in the final.
All seeds receive a bye into the second round.