| Event: | Women's 4 × 100 metre medley relay |
| Competition: | 1999 Pan Pacific Swimming Championships |
| Venue: | Sydney International Aquatic Centre |
| Dates: | August 29, 1999 (heats &<br>finals) |
| Win Value: | 4:03.09 |
| Gold: | Barbara Bedford, Megan Quann, Jenny Thompson and Liesl Kolbisen |
| Goldnoc: | USA |
| Silver: | Dyana Calub, Samantha Riley, Susie O'Neill and Sarah Ryan |
| Silvernoc: | AUS |
| Bronze: | Mai Nakamura, Masami Tanaka, Ayari Aoyama and Suzu Chiba |
| Bronzenoc: | JPN |
| Prev: | 1997 |
| Next: | 2002 |
The women's 4 × 100 metre medley relay competition at the 1999 Pan Pacific Swimming Championships took place on August 29 at the Sydney International Aquatic Centre.[1] The last champion was the United States.[2]
Prior to this competition, the existing world and Pan Pacific records were as follows:
| World record | He Cihong (1:00.16) Dai Guohong (1:09.04) Liu Limin (58.66) Le Jingyi (53.81) | 4:01.67 | Rome, Italy | September 10, 1994 | |
| Pan Pacific Championships record | Nicole Livingstone (1:01.95) Samantha Riley (1:07.19) Susie O'Neill (58.82) Sarah Ryan (54.97) | 4:02.93 | Atlanta, United States | August 13, 1995 |
All times are in minutes and seconds.
Heats weren't performed, as only seven teams had entered.
The final was held on August 29.
| Rank | Name | Nationality | Time | Notes | |
|---|---|---|---|---|---|
| Barbara Bedford (1:01.53) Megan Quann (1:07.55) Jenny Thompson (58.00) Liesl Kolbisen (56.01) | 4:03.09 | ||||
| Dyana Calub (1:02.24) Samantha Riley (1:09.35) Susie O'Neill (58.87) Sarah Ryan (55.28) | 4:05.74 | ||||
| Mai Nakamura (1:01.68) Masami Tanaka (1:09.57) Ayari Aoyama (1:00.26) Suzu Chiba (55.63) | 4:07.14 | ||||
| 4 | Charlene Wittstock (1:03.81) Penelope Heyns (1:06.69) Amanda Loots (1:00.62) Stacey Bowley (56.62) | 4:07.74 | |||
| 5 | Erin Gammel (1:02.83) Lauren van Oosten (1:10.77) Jessica Deglau (1:00.42) Laura Nicholls (55.49) | 4:09.51 | |||
| 6 | Choi Soo-min (1:04.22) Kye Yoon-hee (1:14.08) Cho Hee-yeon (1:01.26) Roh Joo-hee (58.61) | 4:18.17 | |||
| 7 | Nikki Tanner (1:04.44) Jolie Workman (1:13.51) Elizabeth Van Welie (1:04.05) Monique Robbins (57.65) | 4:19.65 |