The 2012 Aberto de Tênis do Rio Grande do Sul was a professional tennis tournament played on clay courts. It was the first edition of the tournament which was part of the 2012 ATP Challenger Tour. It took place in Porto Alegre, Brazil between 22 and 28 October 2012.
Singles main draw entrants
Seeds
| Country | Player | Rank1 | Seed |
|---|---|---|---|
 ESP
|
Rubén Ramírez Hidalgo | 91 | 1 |
 AUT
|
Andreas Haider-Maurer | 98 | 2 |
 POR
|
João Sousa | 99 | 3 |
 ROU
|
Adrian Ungur | 118 | 4 |
 ARG
|
Guido Pella | 126 | 5 |
 BRA
|
Thiago Alves | 129 | 6 |
 NED
|
Thiemo de Bakker | 132 | 7 |
| BRA
|
João Souza | 133 | 8 |
- 1 Rankings are as of October 15, 2012.
Other entrants
The following players received wildcards into the singles main draw:
- Marcelo Demoliner
- Gabriel Friedrich
- Fabricio Neis
- José Pereira
The following players received entry from the qualifying draw:
Champions
Singles
Simon Greul def. Gastão Elias, 2–6, 7–6(7–5), 7–5
Doubles
- Marcelo Demoliner / João Souza def. Simon Greul /
Alessandro Motti, 6–3, 3–6, [10–7]