The Asia/Oceania Zone was one of the three regional zones of the 2018 Davis Cup.

In the Asia/Oceania Zone there were four different tiers, called groups, in which teams competed against each other to advance to the upper tier. Winners in Group I advanced to the World Group play-offs, along with losing teams from the World Group first round. Teams who lost their respective ties competed in the relegation play-offs, with winning teams remaining in Group I, whereas teams who lost their play-offs were relegated to the Asia/Oceania Zone Group II in 2019.

Participating nations

Draw

Second Round Play-offs

First Round Play-offs

First Round

Second Round

1

India

bye

Tianjin, China (hard)[4]

bye

1

India

3

New Zealand

Tianjin, China (indoor hard)[2]

China

2

China

3

Gimcheon, South Korea (hard)[1]

New Zealand

1

New Zealand

2

South Korea

3

Islamabad, Pakistan (grass)[3]

Pakistan

4

South Korea

0

Islamabad, Pakistan (grass)[5]

South Korea

Pakistan

1

bye

2

Uzbekistan

4

bye

2

Uzbekistan

•  New Zealand relegated to Group II in 2019.
•  India and  Uzbekistan advance to World Group Play-off.

First round

China vs. New Zealand

China 3	Tianjin Tennis Center, Tianjin, China[2] 2–3 February Hard (i)		New Zealand 1
1 2 3 1 Wu Di Rubin Statham 6 2 4 6 4 6   2 Zhang Ze Michael Venus 5 7 6 1 6 2   3 Gong Maoxin / Zhang Ze Marcus Daniell / Artem Sitak 6 4 6 4     4 Wu Yibing Rubin Statham 1 6 6 3 6 4   5 Wu Di Michael Venus       not played

Pakistan vs. South Korea

Pakistan 4	Naval Sports Complex, Islamabad, Pakistan[3] 2–3 February Grass		South Korea 0
1 2 3 1 Aisam-ul-Haq Qureshi Kwon Soon-woo 6 3 1 6 78 66   2 Aqeel Khan Hong Seong-chan 4 6 7 5 7 5   3 Aqeel Khan / Aisam-ul-Haq Qureshi Kwon Soon-woo / Lim Yong-kyu 710 68 6 4     4 Mohammad Abid Ali Khan Akbar Park Min-jong 77 62 77 65     5 Aisam-ul-Haq Qureshi Hong Seong-chan       not played

Second round

China vs. India

China 2	Tianjin Tennis Centre, Tianjin, China[4] 6–7 April Hard		India 3
1 2 3 1 Wu Yibing Ramkumar Ramanathan 77 64 6 4     2 Zhang Ze Sumit Nagal 6 4 6 1     3 Gong Maoxin / Zhang Ze Rohan Bopanna / Leander Paes 7 5 65 77 63 77   4 Wu Di Ramkumar Ramanathan 64 77 3 6     5 Wu Yibing Prajnesh Gunneswaran 4 6 2 6

Pakistan vs. Uzbekistan

Pakistan 1	Naval Sports Complex, Islamabad, Pakistan[5] 6–7 April Grass		Uzbekistan 4
1 2 3 1 Aisam-ul-Haq Qureshi Denis Istomin 617 719 1 4   retired   2 Aqeel Khan Sanjar Fayziev 66 78 6 4 6 4   3 Aqeel Khan / Aisam-ul-Haq Qureshi Denis Istomin / Jurabek Karimov 2 6 4 6     4 Aqeel Khan Denis Istomin 1 6 3 6     5 Muzammil Murtaza Khumoyun Sultanov 3 6 1 6

Second round play-offs

South Korea vs. New Zealand

South Korea 3	Gimcheon Sports Town Tennis Courts, Gimcheon, South Korea[1] 14–15 September Hard		New Zealand 2
1 2 3 1 Hong Seong-chan Rubin Statham 610 712 2 6     2 Lee Duck-hee Michael Venus 7 5 67 79 6 2   3 Hong Seong-chan / Lee Jea-moon Ajeet Rai / Artem Sitak 5 7 3 6     4 Lee Duck-hee Rubin Statham 6 4 6 1     5 Lim Yong-kyu Michael Venus 77 65 6 4