See main article: 2017 Davis Cup.
The Americas Zone was one of the three zones of the regional Davis Cup competition in 2017.
In the Americas Zone there were three different tiers, called groups, in which teams competed against each other to advance to the upper tier. Winners in Group III advanced to the Americas Zone Group II in 2018. All other teams remained in Group III.
These nations decided not to compete in the 2017 Davis Cup.
Date: 12–17 June 2017
Location: Carrasco Lawn Tennis Club, Montevideo, Uruguay (clay)
Format: Round-robin basis. Two pools of four and five teams, respectively (Pools A and B). The winner of each pool plays off against the runner-up of the other pool to determine which two nations are promoted to Americas Zone Group II in 2018.
Seeding: The seeding was based on the Davis Cup Rankings of 10 April 2017 (shown in parentheses below).
Standings are determined by: 1. number of wins; 2) If two teams have the same number of wins, head-to-head record; 3) If three teams have the same number of wins, (a) number of matches won in the group, then (b) percentage of sets won in the group, then (c) percentage of games won in the group, then (d) Davis Cup rankings.
| Placing | A Team | Score | B Team |
|---|---|---|---|
| Promotional | 2–0 | ||
| Promotional | 1–2 | ||
| 5th–6th | 2–1 | ||
| 7th–8th | 2–0 | ||
| 9th | colspan=2 |
and promoted to Group II in 2018.