The Asia/Oceania Zone was one of three zones of regional competition in the 1998 Fed Cup.
Group I
Venue: Thana City Golf Club, Samutpakarn, Thailand (outdoor hard) Date: 16–20 February
The nine teams were first randomly divided into three pools of three teams to compete in round-robin competitions. The nine teams were then divided into three new pools based on their placing in their first pools, which would be used to determine each team's overall placing in the zonal group. The team that finished first overall would be promoted to the World Group II Play-offs, while the team that finished ninth would be relegated to Group II for 1999.
Initial Pools
Placement Pools
advanced to World Group II Play-offs. relegated to Group II in 1999.
Group II
Venue: Thana City Golf Club, Samutpakarn, Thailand (outdoor hard) Date: 16–21 February
The nine teams were first randomly divided into three pools of three teams to compete in round-robin competitions. The nine teams were then divided into three new pools based on their placing in their first pools, which would be used to determine each team's overall placing in the zonal group. The teams that finished first and second overall would be promoted to Group I for 1999.
Initial Pools
Placement Pools
and Pacific Oceania advanced to Group I in 1999.