| Date: | March 14 – March 20 |
| Edition: | 5th |
| Category: | ATP Challenger Tour |
| Surface: | Hard (indoor) |
| Location: | Rimouski, Canada |
| Venue: | Tennis de Rimouski |
| Champs: | Fritz Wolmarans |
| Champd: | Treat Conrad Huey /  Vasek Pospisil |
| Main Name: | Challenger de Rimouski |
The 2011 Challenger Banque Nationale de Rimouski was a professional tennis tournament played on indoor hard courts. It was the 5th edition of the tournament and part of the 2011 ATP Challenger Tour, offering a total of $35,000 in prize money. It took place in Rimouski, Canada between March 14 and March 20, 2011.
| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
| Bobby Reynolds | 155 | 1 | ||
| Canada | Peter Polansky | 204 | 2 | |
 Italy | Matteo Viola | 208 | 3 | |
| Frederik Nielsen | 240 | 4 | ||
| Fritz Wolmarans | 254 | 5 | ||
 Israel | Amir Weintraub | 257 | 6 | |
| Canada | Philip Bester | 259 | 7 | |
 Australia | Sam Groth | 261 | 8 |
The following players received wildcards into the singles main draw:
Daniel Chu Ahmed El-Tabakh Pavel Krainik Robert RotaruThe following players received entry from the qualifying draw:
David Rice
Julien Dubail
Albano Olivetti
Blake StrodeSee main article: 2011 Challenger Banque Nationale de Rimouski – Singles. Fritz Wolmarans def. Bobby Reynolds, 6–7(2–7), 6–3, 7–6(7–3)
See main article: 2011 Challenger Banque Nationale de Rimouski – Doubles. Treat Conrad Huey / Vasek Pospisil def. David Rice / Sean Thornley, 6–0, 6–1