2018 Fed Cup Asia/Oceania Zone
The Asia/Oceania Zone was one of three zones of regional competition in the 2018 Fed Cup.
Group I
The eight teams were divided into two pools of four teams. The two pool winners took part in a play-off to determine the nation advancing to the World Group II play-offs. The four nations finishing last and second last in their pools took part in relegation play-offs, with the two losing nations being relegated to Group II for 2019.
Seeding
| Pot | Nation | Rank1 | Seed |
| 1 | | 21 | 1 |
| 1 | | 22 | 2 |
| 2 | | 23 | 3 |
| 2 | | 25 | 4 |
| 3 | | 29 | 5 |
| 3 | | 32 | 6 |
| 4 | | 34 | 7 |
| 4 | | 35 | 8 |
1Fed Cup Rankings as of 13 November 2017
Play-offs
| Placing | A Team | Score | B Team |
| Promotional | | 1–2 | ' |
| 3rd–4th | ' | 2–0 | |
| Relegation | ' | 2–0 | ' |
| Relegation | ' | 1–2 | ' |
Final placements
was promoted to the 2018 Fed Cup World Group II Play-offs.' and ' were relegated to Asia/Oceania Zone Group II in 2019.
Group II
The fourteen teams were divided into two pools of four teams and two pools of three teams. The four pool winners took part in a play-off to determine the nations advancing to the World Group II play-offs.
Seeding
| Pot | Nation | Rank1 | Seed |
| 1 | | 33 | 1 |
| 1 | | 48 | 2 |
| 1 | | 55 | 3 |
| 1 | | 56 | 4 |
| 2 | | 58 | 5 |
| 2 | | 61 | 6 |
| 2 | | 66 | 7 |
| 2 | | 71 | 8 |
| 3 | | 80 | 9 |
| 3 | | 83 | 10 |
| 3 | | 89 | 11 |
| 3 | | 101 | 12 |
| 3 | | NR | 13 |
| 3 | | NR | 14 |
1Fed Cup Rankings as of 13 November 2017
Final placements
' and ' were promoted to Asia/Oceania Zone Group I in 2019.