The Asia/Oceania Zone was one of the three zones of the regional Davis Cup competition in 1991.
In the Asia/Oceania Zone there were two different tiers, called groups, in which teams competed against each other to advance to the upper tier.
Group I
Winners in Group I advanced to the World Group qualifying round, along with losing teams from the World Group first round. The winner of the preliminary round joined the remaining teams in the main draw first round, while the losing team was relegated to the Asia/Oceania Zone Group II in 1992.
Participating nations
Draw
relegated to Group II in 1992.
and advance to World Group qualifying round.
Preliminary round
Thailand vs. India
First round
India vs. Indonesia
Japan vs. Philippines
Second round
India vs. South Korea
Philippines vs. China
Group II
The winner in Group II advanced to the Asia/Oceania Zone Group I in 1992.
Participating nations
Draw
promoted to Group I in 1992.