| Date: | 30 September – 6 October |
| Edition: | 1st |
| Surface: | Clay |
| Location: | São Paulo, Brazil |
| Champs: |  Guido Pella |
| Champd: |  Roman Borvanov /  Artem Sitak |
| After Year: | no |
The 2013 IS Open was a professional tennis tournament being played on hard courts. It was the first edition and only edition of the tournament which was part of the 2013 ATP Challenger Tour. It is taking place in São Paulo, Brazil between 30 September and 6 October 2013.
| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
| Blaž Kavčič | 106 | 1 | ||
 Colombia | Alejandro González | 108 | 2 | |
| Thiemo de Bakker | 110 | 3 | ||
| Argentina | Guido Pella | 115 | 4 | |
 Russian Federation | Andrey Kuznetsov | 117 | 5 | |
| Argentina | Martín Alund | 121 | 6 | |
| Gastão Elias | 129 | 7 | ||
 Brazil | Rogério Dutra da Silva | 133 | 8 |
The following players received wildcards into the singles main draw:
Leonardo Kirche Daniel Dutra da Silva Thiago Monteiro Tiago LopesThe following players received entry from the qualifying draw:
See main article: 2013 IS Open – Singles.
Guido Pella def. Facundo Argüello, 6–1, 6–0See main article: 2013 IS Open – Doubles.
Roman Borvanov / Artem Sitak def. 
Sergio Galdós / Guido Pella, 6–4, 7–6(7–3)