| Competition | 1991 Pan Pacific Swimming Championships | 
|---|---|
| Venue | 
Edmonton
 | 
| Held | 25 August 1991 | 
| Status | Medal | 
| Competitors | 19 | 
| Countries | 8 | 
| Pos | Athlete(s) | Country | Preliminary Round | Final | ||
|---|---|---|---|---|---|---|
| 🥇 | Jenny Thompson | 25.85 (1 h1)  | 
25.77 (1 FA)  | 
|||
| 🥈 | Angel Martino | 25.86 (2 h1)  | 
25.86 (2 FA)  | 
|||
| 🥉 | Toni Jeffs | 26.41 (6 h1)  | 
26.21 (3 FA)  | 
|||
| 4 | Andrea Nugent | 26.83 (9 h1)  | 
26.36 (4 FA)  | 
|||
| 5 | Ayako Nakano | 26.39 (5 h1)  | 
26.53 (5 FA)  | 
|||
| 6 | Naoko Imoto | 26.91 (10 h1)  | 
26.59 (6 FA)  | 
|||
| 7 | Karen Van Wirdum | 26.82 (8 h1)  | 
26.68 (7 FA)  | 
|||
| 8 | Hen Xiaoyun | 26.69 (7 h1)  | 
26.81 (8 FA)  | 
|||
| 9 | Crissy Ahmann-Leighton | 25.97 (3 h1)  | 
25.74 (1 FB)  | 
|||
| 10 | Susie O'Neill | 26.92 (11 h1)  | 
26.61 (2 FB)  | 
|||
| 11 | Lise Mackie | 27.21 (13 h1)  | 
27.02 (3 FB)  | 
|||
| 12 | Julie Howard | 27.14 (12 h1)  | 
27.05 (4 FB)  | 
|||
| 13 | Edith Lachapelle | 27.32 (15 h1)  | 
27.12 (5 FB)  | 
|||
| 14 | Eiko Yasutomi | 27.28 (14 h1)  | 
27.30 (6 FB)  | 
|||
| 15 | Carolina Mauri | 28.57 (18 h1)  | 
28.76 (7 FB)  | 
|||
| 16 | Lin Chien-Ju | 28.76 (19 h1)  | 
29.15 (8 FB)  | 
|||
| 17 | Leigh Ann Fetter | 26.03 (4 h1)  | 
— | |||
| 18 | Patricia Levesque | 27.45 (16 h1)  | 
— | |||
| 19 | Petrina Lessard | 27.52 (17 h1)  | 
— | 
| Pos | Athlete(s) | Country | Mark | |
|---|---|---|---|---|
| 1 | Jenny Thompson | 25.85 | ||
| 2 | Angel Martino | 25.86 | ||
| 3 | Crissy Ahmann-Leighton | 25.97 | ||
| 4 | Leigh Ann Fetter | 26.03 | ||
| 5 | Ayako Nakano | 26.39 | ||
| 6 | Toni Jeffs | 26.41 | ||
| 7 | Hen Xiaoyun | 26.69 | ||
| 8 | Karen Van Wirdum | 26.82 | ||
| 9 | Andrea Nugent | 26.83 | ||
| 10 | Naoko Imoto | 26.91 | ||
| 11 | Susie O'Neill | 26.92 | ||
| 12 | Julie Howard | 27.14 | ||
| 13 | Lise Mackie | 27.21 | ||
| 14 | Eiko Yasutomi | 27.28 | ||
| 15 | Edith Lachapelle | 27.32 | ||
| 16 | Patricia Levesque | 27.45 | ||
| 17 | Petrina Lessard | 27.52 | ||
| 18 | Carolina Mauri | 28.57 | ||
| 19 | Lin Chien-Ju | 28.76 | 
| Pos | Athlete(s) | Country | Mark | |
|---|---|---|---|---|
| 1 | Jenny Thompson | 25.77 | ||
| 2 | Angel Martino | 25.86 | ||
| 3 | Toni Jeffs | 26.21 | ||
| 4 | Andrea Nugent | 26.36 | ||
| 5 | Ayako Nakano | 26.53 | ||
| 6 | Naoko Imoto | 26.59 | ||
| 7 | Karen Van Wirdum | 26.68 | ||
| 8 | Hen Xiaoyun | 26.81 | 
| Pos | Athlete(s) | Country | Mark | |
|---|---|---|---|---|
| 1 | Crissy Ahmann-Leighton | 25.74 | ||
| 2 | Susie O'Neill | 26.61 | ||
| 3 | Lise Mackie | 27.02 | ||
| 4 | Julie Howard | 27.05 | ||
| 5 | Edith Lachapelle | 27.12 | ||
| 6 | Eiko Yasutomi | 27.30 | ||
| 7 | Carolina Mauri | 28.76 | ||
| 8 | Lin Chien-Ju | 29.15 |