| Champ: |  Facundo Bagnis |
| Runner: |  Rogério Dutra Silva |
| Score: | 6–7(3–7), 6–4, 6–3 |
| Type: | singles doubles |
See main article: 2016 Challenger ATP Cachantún Cup. Facundo Bagnis was the defending champion.
Facundo Bagnis defended his title by repeating as champion, defeating Rogério Dutra Silva 6–7(3–7), 6–4, 6–3 in the final.