The 2012 Torneo Internacional AGT was a professional tennis tournament played on hard courts. It was the tenth edition of the tournament which was part of the 2012 ATP Challenger Tour. It took place in León, Mexico between 9 and 15 April 2012.
| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
 Australia | Marinko Matosevic | 121 | 1 | |
| Rajeev Ram | 137 | 2 | ||
 Italy | Matteo Viola | 172 | 3 | |
 Czech Republic | Jan Mertl | 181 | 4 | |
 Canada | Érik Chvojka | 217 | 5 | |
 United Kingdom | Jamie Baker | 220 | 6 | |
| Canada | Pierre-Ludovic Duclos | 232 | 7 | |
 Moldova, Republic of | Roman Borvanov | 236 | 8 |
The following players received wildcards into the singles main draw:
Miguel Gallardo Valles Marinko Matosevic César Ramírez Manuel SanchezThe following players received entry as an alternate into the singles main draw:
The following players received entry from the qualifying draw:
Colin Ebelthite John Peers Bruno Rodriguez
Denis ZivkovicThe following players received entry as a lucky loser:
See main article: 2012 Torneo Internacional AGT – Singles.
Denis Zivkovic def. Rajeev Ram, 7–6(7–5), 6–4See main article: 2012 Torneo Internacional AGT – Doubles.
John Peers / John-Patrick Smith def. César Ramírez / Bruno Rodríguez, 6–3, 6–3