100 m Butterfly, Men
| Competition | 2003 United States Spring Swimming Championships |
|---|---|
| Venue |
Indianapolis, Indiana
 USA
|
| Held | 4 April 2003 |
| Status | Medal |
| Competitors | 8 |
| Countries | 5 |
Indianapolis, Indiana / IUPUI Natatorium / long-course metric (50m)
| Pos | Athlete(s) | Country | Mark | ||
|---|---|---|---|---|---|
| 🥇 | Michael Phelps North Baltimore Aquatic Club |
USA |
51.89 | ||
| 🥈 | Takashi Yamamoto Region of Waterloo |
 JPN |
52.94 | ||
| 🥉 | Mike Mintenko University of British Columbia Thunderbirds |
 CAN |
53.08 | ||
| 4 | Ben Michaelson Santa Clara Swim Club |
USA |
53.09 | ||
| 5 | Josh Ilika Cape Coast Swim Club |
 MEX |
53.30 | ||
| 6 | Tommy Hannan Unattached |
USA |
53.43 | ||
| 7 | Andy Haidinyak Auburn Aquatics |
USA |
53.74 | ||
| 8 | Zsolt Gáspár Unattached |
 HUN |
53.90 |