| Event: | Synchronized swimming |
| Games: | 1998 Asian Games |
| Venue: | Thammasat Aquatic Center |
| Dates: | 13–15 December 1998 |
| Competitors: | 16 |
| Nations: | 7 |
| Prev: | 1994 |
| Next: | 2002 |
Synchronized swimming was contested from December 13 to December 15 at the 1998 Asian Games in Thammasat Aquatic Center, Bangkok, Thailand. A total of 16 athletes from seven nations competed in the event, Japan won both gold medals, South Korea won both silver medals and China won all bronze medals.
| T | Technical routine | F | Free routine |
| Event↓/Date → | 13th Sun | 14th Mon | 15th Tue | |
|---|---|---|---|---|
| T | F | |||
| T | F |
| Solo | ||||
| Duet | Miya Tachibana Miho Takeda | Jang Yoon-kyeong Yoo Na-mi | Li Min Long Yan |
A total of 16 athletes from 7 nations competed in synchronized swimming at the 1998 Asian Games: