See main article: 2012 Davis Cup Americas Zone. The Americas Zone is one of the three zones of regional Davis Cup competition in 2012.
In the Americas Zone in 2012 there are three different groups in which teams compete against each other to advance to the next group, as Groups III and IV have been merged.
The teams were split into two groups, playing a round-robin, with the winner of each group playing the runner-up of the other group for promotion to Division II in 2013.
It was played in the week commencing 18 June 2012 at Tobago, Trinidad and Tobago and was played on outdoor hard court.
| width=175 | Team | width=20 | Pld | width=20 | W | width=20 | L | width=20 | MF | width=20 | MA | width=20 | Pts |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 4 | 4 | 0 | 11 | 1 | 4 | ||||||||
| 4 | 3 | 1 | 10 | 2 | 3 | ||||||||
| 4 | 2 | 2 | 5 | 7 | 2 | ||||||||
| 4 | 1 | 3 | 3 | 9 | 1 | ||||||||
| 4 | 0 | 4 | 1 | 11 | 0 |
| width=175 | Team | width=20 | Pld | width=20 | W | width=20 | L | width=20 | MF | width=20 | MA | width=20 | Pts |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 4 | 3 | 1 | 10 | 2 | 3 | ||||||||
| 4 | 3 | 1 | 8 | 4 | 3 | ||||||||
| 4 | 3 | 1 | 8 | 4 | 3 | ||||||||
| 4 | 1 | 3 | 4 | 8 | 1 | ||||||||
| 4 | 0 | 4 | 0 | 12 | 0 |