| Date: | July 16 – July 22 |
| Edition: | 19th (men) 2nd (women) |
| Category: | ATP Challenger Tour ITF Women's Circuit |
| Prize Money: | (men) (women) |
| Surface: | Hard – outdoors |
| Location: | Granby, Quebec, Canada |
| Venue: | Club de tennis des Loisirs de Granby |
| Champms: |  Vasek Pospisil |
| Champws: | Eugenie Bouchard |
| Champmd: | Philip Bester / Vasek Pospisil |
| Champwd: | Sharon Fichman / Marie-Ève Pelletier |
| Main Name: | Challenger de Granby |
The 2012 Challenger Banque Nationale de Granby was a professional tennis tournament played on outdoor hard courts. It was the 19th edition, for men, and 2nd edition, for women, of the tournament and part of the 2012 ATP Challenger Tour and the 2012 ITF Women's Circuit, offering totals of $50,000, for men, and $25,000, for women, in prize money. It took place in Granby, Quebec, Canada between July 16 and July 22, 2012.
| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
| Canada | Vasek Pospisil | 105 | 1 | |
| Igor Sijsling | 110 | 2 | ||
| Canada | Frank Dancevic | 132 | 3 | |
 Thailand | Danai Udomchoke | 165 | 4 | |
 Belgium | Maxime Authom | 179 | 5 | |
 Australia | James Duckworth | 192 | 6 | |
| Canada | Érik Chvojka | 224 | 7 | |
 Italy | Thomas Fabbiano | 234 | 8 |
The following players received wildcards into the singles main draw:
Philip Bester Frank Dancevic Pavel Krainik Samuel MonetteThe following players received entry from the qualifying draw:
Reid Carleton Isade Juneau Milan Pokrajac
Takao SuzukiSee main article: 2012 Challenger Banque Nationale de Granby – Men's singles.
Vasek Pospisil def. Igor Sijsling, 7–6(7–2), 6–4See main article: 2012 Challenger Banque Nationale de Granby – Women's singles.
Eugenie Bouchard def. Stéphanie Dubois, 6–2, 5–2, retiredSee main article: 2012 Challenger Banque Nationale de Granby – Men's doubles.
Philip Bester / Vasek Pospisil def. Yuichi Ito / Takuto Niki, 6–1, 6–2See main article: 2012 Challenger Banque Nationale de Granby – Women's doubles.
Sharon Fichman / Marie-Ève Pelletier def. Shuko Aoyama / Miki Miyamura, 4–6, 7–5, [10–4]