2015 IS Open de Tênis

The 2015 IS Open de Tênis was a professional tennis tournament played on clay courts. It was resumed after not being held in 2014, being the third edition of the tournament which was part of the 2015 ATP Challenger Tour. It took place in São Paulo, Brazil, on 22–28 October 2015.

Seeds

 * 1 Rankings as of 5 October 2015

Other entrants
The following players received wildcards into the singles main draw:
 * 🇧🇷 Thiago Monteiro
 * 🇧🇷 Orlando Luz
 * 🇧🇷 Pedro Sakamoto
 * 🇧🇷 Marcelo Zormann

The following players received entry from the qualifying draw:
 * 🇧🇪 Joris De Loore
 * 🇧🇷 João Menezes
 * 🇧🇷 André Miele
 * 🇧🇷 Carlos Eduardo Severino

The following players entered as lucky losers:
 * 🇧🇷 Ricardo Hocevar
 * 🇧🇷 João Pedro Sorgi

Seeds

 * 1 Rankings as of 13 October 2015

Other entrants
The following pairs received wildcards into the doubles main draw:
 * 🇧🇷 Igor Marcondes / 🇧🇷 João Menezes
 * 🇧🇷 Thiago Monteiro / 🇧🇷 Pedro Sakamoto
 * 🇧🇷 Felipe Carvalho / 🇧🇷 Rodrigo Carvalho

The following pairs entered as an alternate:
 * 🇧🇷 Carlos Eduardo Severino / 🇧🇷 João Pedro Sorgi

The following pairs entered using a protected ranking:
 * Gastão Elias / Pedro Sousa

Singles

 * 🇦🇷 Carlos Berlocq def. 🇧🇪 Kimmer Coppejans 6–3, 6–1

Doubles

 * Hans Podlipnik / 🇧🇷 Caio Zampieri def. 🇦🇷 Nicolás Kicker / 🇦🇷 Renzo Olivo 7–5, 6–0