See main article: 2017 Davis Cup.
The Asia/Oceania Zone was the unique zone within Group 3 of the regional Davis Cup competition in 2017. The zone's competition was held in round robin format in Colombo, Sri Lanka, from 17 July to 22 July 2017. The two winning nations won promotion to Group II, Asia/Oceania Zone, for 2018.
Date: 17–22 July
Location: Sri Lanka Tennis Association, Colombo, Sri Lanka (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 Asia/Oceania 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. number of matches; 3. in two-team ties, head-to-head records; 4. in three-team ties, (a) percentage of sets won (head-to-head records if two teams remain tied), then (b) percentage of games won (head-to-head records if two teams remain tied), then (c) Davis Cup rankings.
Standings are determined by: 1. number of wins; 2. number of matches; 3. in two-team ties, head-to-head records; 4. in three-team ties, (a) percentage of sets won (head-to-head records if two teams remain tied), then (b) percentage of games won (head-to-head records if two teams remain tied), then (c) Davis Cup rankings.
| Placing | A Team | Score | B Team | |
|---|---|---|---|---|
| Promotional | 2–0 | |||
| Promotional | 0–2 | |||
| 5th | colspan=2 | |||
| Relegation | 2–1 | |||
| Relegation | 2–0 |