The Asia/Oceania Zone was the unique zone within Group 3 of the regional Davis Cup competition in 2018. The zone's competition was held in round robin format in Hanoi, Vietnam, from 2 to 7 April 2018. The two winning nations won promotion to Group II, Asia/Oceania Zone, for 2019.
Date: 2–7 April, 2018
Location: Mỹ Đình Sports Complex, Hanoi, Vietnam (indoor hard)
Format: Round-robin basis. One pool of 4 teams (Pool A) and one pool of 5 teams (Pool B). The winner of Pool A will play-off against the runner-up of Pool B and the winner of Pool B will play-off against the runner-up of Pool A to determine which two nations will be promoted to Asia/Oceania Zone Group II in 2019.
| Pot | Nation | Rank1 | Seed |
|---|---|---|---|
| 1 |  Vietnam | 67 | 1 |
 Kuwait | 73 | 2 | |
| 2 |  Qatar | 86 | 3 |
 Malaysia | 91 | 4 | |
| 3 |  Syria | 92 | 5 |
 Pacific Oceania | 93 | 6 | |
| 4 |  Jordan | 99 | 7 |
 Cambodia | 103 | 8 | |
 Saudi Arabia | 114 | 9 |
| VIE | MAS | CAM | POC | RR W–L | Set W–L | Game W–L | Standings | ||
| 1 | Vietnam | 3–0 | 3–0 | 2–1 | 3–0 | 17–3 (85%) | 113–48 (70%) | 1 | |
| 4 | Malaysia | 0–3 | 3–0 | 2–1 | 2–1 | 12–9 (57%) | 103–95 (52%) | 2 | |
| 8 | Cambodia | 0–3 | 0–3 | 2–1 | 1–2 | 6–15 (29%) | 77–112 (41%) | 3 | |
| 6 | Pacific Oceania | 1–2 | 1–2 | 1–2 | 0–3 | 7–15 (32%) | 83–121 (41%) | 4 |
| KUW | QAT | SYR | JOR | KSA | RR W–L | Set W–L | Game W–L | Standings | ||
| 2 | Kuwait | 2–1 | 2–1 | 3–0 | 3–0 | 4–0 | 20–5 (80%) | 144–90 (62%) | 1 | |
| 3 | Qatar | 1–2 | 3–0 | 2–1 | 3–0 | 3–1 | 19–8 (70%) | 145–102 (59%) | 2 | |
| 5 | Syria | 1–2 | 0–3 | 2–1 | 2–1 | 2–2 | 12–16 (43%) | 113–139 (45%) | 3 | |
| 7 | Jordan | 0–3 | 1–2 | 1–2 | 3–0 | 1–3 | 12–16 (43%) | 126–128 (50%) | 4 | |
| 9 | Saudi Arabia | 0–3 | 0–3 | 1–2 | 0–3 | 0–4 | 5–23 (18%) | 87–156 (36%) | 5 |
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 | Vietnam | 3–0 | Qatar |
| Promotional | Malaysia | 0–2 | Kuwait |
| 5th | N/A | Syria | |
| Relegation | Cambodia | 0–3 | Saudi Arabia |
| Relegation | Pacific Oceania | 2–1 | Jordan |
 Vietnam 2 | Mỹ Đình Sports Complex, Hanoi, Vietnam [1] 3 April Hard (indoor) |  Pacific Oceania 1 | |||||||||||||||||||||||||||||
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 Malaysia 3 | Mỹ Đình Sports Complex, Hanoi, Vietnam [2] 3 April Hard (indoor) |  Cambodia 0 | |||||||||||||||||||||||||||||
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Vietnam 3 | Mỹ Đình Sports Complex, Hanoi, Vietnam [3] 4 April Hard (indoor) | Cambodia 0 | |||||||||||||||||||||||||||||
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Malaysia 2 | Mỹ Đình Sports Complex, Hanoi, Vietnam [4] 4 April Hard (indoor) | Pacific Oceania 1 | |||||||||||||||||||||||||||||
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Vietnam 3 | Mỹ Đình Sports Complex, Hanoi, Vietnam [5] 5 April Hard (indoor) | Malaysia 0 | |||||||||||||||||||||||||||||
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Pacific Oceania 1 | Mỹ Đình Sports Complex, Hanoi, Vietnam [6] 5 April Hard (indoor) | Cambodia 2 | |||||||||||||||||||||||||||||
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 Kuwait 3 | Mỹ Đình Sports Complex, Hanoi, Vietnam [7] 2 April Hard (indoor) |  Jordan 0 | |||||||||||||||||||||||||||||
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 Qatar 3 | Mỹ Đình Sports Complex, Hanoi, Vietnam [8] 2 April Hard (indoor) |  Syria 0 | |||||||||||||||||||||||||||||
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Kuwait 3 | Mỹ Đình Sports Complex, Hanoi, Vietnam [9] 3 April Hard (indoor) |  Saudi Arabia 0 | |||||||||||||||||||||||||||||
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Qatar 2 | Mỹ Đình Sports Complex, Hanoi, Vietnam [10] 3 April Hard (indoor) | Jordan 1 | |||||||||||||||||||||||||||||
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Kuwait 2 | Mỹ Đình Sports Complex, Hanoi, Vietnam [11] 4 April Hard (indoor) | Qatar 1 | |||||||||||||||||||||||||||||
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Syria 2 | Mỹ Đình Sports Complex, Hanoi, Vietnam [12] 4 April Hard (indoor) | Saudi Arabia 1 | |||||||||||||||||||||||||||||
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Kuwait 2 | Mỹ Đình Sports Complex, Hanoi, Vietnam [13] 5 April Hard (indoor) | Syria 1 | |||||||||||||||||||||||||||||
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Jordan 3 | Mỹ Đình Sports Complex, Hanoi, Vietnam [14] 5 April Hard (indoor) | Saudi Arabia 0 | |||||||||||||||||||||||||||||
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Qatar 3 | Mỹ Đình Sports Complex, Hanoi, Vietnam [15] 6 April Hard (indoor) | Saudi Arabia 0 | |||||||||||||||||||||||||||||
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Syria 2 | Mỹ Đình Sports Complex, Hanoi, Vietnam [16] 6 April Hard (indoor) | Jordan 1 | |||||||||||||||||||||||||||||
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Vietnam 3 | Mỹ Đình Sports Complex, Hanoi, Vietnam [17] 7 April Hard (indoor) | Qatar 0 | |||||||||||||||||||||||||||||
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Malaysia 0 | Mỹ Đình Sports Complex, Hanoi, Vietnam [18] 7 April Hard (indoor) | Kuwait 2 | |||||||||||||||||||||||||||||
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Cambodia 0 | Mỹ Đình Sports Complex, Hanoi, Vietnam [19] 7 April Hard (indoor) | Saudi Arabia 3 | |||||||||||||||||||||||||||||
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Jordan 1 | Mỹ Đình Sports Complex, Hanoi, Vietnam [20] 7 April Hard (indoor) | Pacific Oceania 2 | |||||||||||||||||||||||||||||
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