2002 Pan Pacific Swimming Championships – Men's 100 metre butterfly
The men's 100 metre butterfly competition at the 2002 Pan Pacific Swimming Championships took place on August 28–29 at the Yokohama International Swimming Pool. The last champion was Michael Klim of Australia.
This race consisted of two lengths of the pool, all in butterfly.
Records
Prior to this competition, the existing world and Pan Pacific records were as follows:| World record | 51.81 | Canberra, Australia | December 12, 1999 | |
| Pan Pacific Championships record | 52.45 | Sydney, Australia | August 27, 1999 |
Results
All times are in minutes and seconds.| KEY: | q | Fastest non-qualifiers | Q | Qualified | CR | Championships record | NR | National record | PB | Personal best | SB | Seasonal best |
Heats
The first round was held on August 28.| Rank | Heat | Lane | Name | Nationality | Time | Notes |
| 1 | 2 | 4 | Ian Crocker | 52.52 | Q | |
| 2 | 4 | 5 | Takashi Yamamoto | 53.02 | Q | |
| 3 | 4 | 3 | Thomas Hannan | 53.17 | Q | |
| 4 | 3 | 3 | Kohei Kawamoto | 53.96 | Q | |
| 5 | 2 | 5 | Adam Pine | 54.01 | Q | |
| 6 | 3 | 6 | Tom Malchow | 54.27 | Q | |
| 7 | 2 | 3 | Jin Hao | 54.31 | Q | |
| 8 | 3 | 5 | Mike Mintenko | 54.32 | Q | |
| 9 | 2 | 6 | Hugo Duppré | 54.74 | Q | |
| 10 | 4 | 2 | Andrew Livingston | 54.78 | Q | |
| 11 | 3 | 4 | Geoff Huegill | 54.86 | Q | |
| 12 | 3 | 7 | Atsushi Nishikori | 54.96 | Q | |
| 13 | 2 | 2 | Moss Burmester | 55.49 | Q | |
| 14 | 3 | 2 | Heath Ramsay | 55.60 | Q | |
| 15 | 4 | 1 | Juan Pablo Valdivieso | 55.61 | Q | |
| 16 | 2 | 1 | Pedro Monteiro | 55.67 | Q | |
| 17 | 4 | 7 | Yu Kondo | 56.06 | ||
| 18 | 4 | 6 | Ravil Nachaev | 56.27 | ||
| 19 | 1 | 5 | Scott Talbot | 56.39 | ||
| 20 | 2 | 7 | Mark Kwok Kin Ming | 56.67 | ||
| 21 | 4 | 8 | Jun Mark Chay Jung | 56.77 | ||
| 22 | 1 | 4 | Szeto Shui Ki | 57.86 | ||
| 23 | 2 | 8 | Ng Cheng Xun | 58.43 | ||
| 24 | 1 | 3 | Wong Kwok Kei | 1:00.85 | ||
| 25 | 1 | 6 | Dean Palacios | 1:02.50 | ||
| - | 3 | 1 | Dean Kent | DNS | ||
| - | 3 | 8 | Aaron Ciarla | DNS | ||
| - | 4 | 4 | Michael Phelps | DNS |
Semifinals
The semifinals were held on August 28.| Rank | Heat | Lane | Name | Nationality | Time | Notes |
| 1 | 2 | 4 | Ian Crocker | 52.21 | Q, CR | |
| 2 | 1 | 2 | Geoff Huegill | 52.38 | Q | |
| 3 | 1 | 6 | Mike Mintenko | 52.61 | Q | |
| 4 | 1 | 4 | Takashi Yamamoto | 52.64 | Q | |
| 5 | 2 | 5 | Thomas Hannan | 53.09 | Q | |
| 6 | 2 | 3 | Adam Pine | 53.39 | Q | |
| 7 | 1 | 5 | Kohei Kawamoto | 53.63 | Q | |
| 8 | 1 | 3 | Tom Malchow | 53.82 | Q | |
| 9 | 2 | 6 | Jin Hao | 54.25 | ||
| 10 | 2 | 2 | Hugo Duppré | 54.63 | ||
| 11 | 2 | 7 | Atsushi Nishikori | 55.01 | ||
| 12 | 1 | 7 | Moss Burmester | 55.47 | ||
| 13 | 1 | 8 | Yu Kondo | 55.78 | ||
| 14 | 2 | 8 | Pedro Monteiro | 55.91 | ||
| 15 | 1 | 1 | Juan Pablo Valdivieso | 55.97 | ||
| 16 | 2 | 1 | Heath Ramsay | 55.98 |
Final
The final was held on August 29.| Rank | Lane | Name | Nationality | Time | Notes |
| 4 | Ian Crocker | 52.45 | |||
| 5 | Geoff Huegill | 52.48 | |||
| 3 | Mike Mintenko | 52.69 | |||
| 4 | 6 | Takashi Yamamoto | 52.88 | ||
| 5 | 7 | Adam Pine | 52.97 | ||
| 6 | 2 | Thomas Hannan | 53.00 | ||
| 7 | 1 | Kohei Kawamoto | 53.79 | ||
| 8 | 8 | Jin Hao | 54.43 |