| Event: | Men's giant slalom |
| Games: | 2003 Asian Winter Games |
| Venue: | Ajigasawa Ski Area |
| Dates: | 3 February 2003 |
| Competitors: | 12 |
| Nations: | 5 |
| Gold: | Kohei Kawaguchi |
| Goldnoc: | JPN |
| Silver: | Teruumi Fujimoto |
| Silvernoc: | JPN |
| Bronze: | Kentaro Tsuruoka |
| Bronzenoc: | JPN |
| Next: | 2017 |
See main article: Snowboarding at the 2003 Asian Winter Games. The men's giant slalom competition at the 2003 Asian Winter Games in Aomori, Japan was held on 3 February at the Ajigasawa Ski Area.
All times are Japan Standard Time
| width=220 | Date | width=50 | Time | width=100 | Event |
|---|---|---|---|---|---|
| Monday, 3 February 2003 | 10:00 | 1st run | |||
| 12:45 | 2nd run |
| width=40 | Rank | width=250 | Athlete | width=80 | 1st run | width=80 | 2nd run | width=80 | Total |
|---|---|---|---|---|---|---|---|---|---|
| 1:09.78 | 1:12.66 | 2:22.44 | |||||||
| 1:11.18 | 1:13.29 | 2:24.47 | |||||||
| 1:10.56 | 1:13.96 | 2:24.52 | |||||||
| 4 | 1:12.13 | 1:12.66 | 2:24.79 | ||||||
| 5 | 1:12.09 | 1:13.70 | 2:25.79 | ||||||
| 6 | 1:12.74 | 1:13.72 | 2:26.46 | ||||||
| 7 | 1:12.62 | 1:15.28 | 2:27.90 | ||||||
| 8 | 1:13.95 | 1:16.83 | 2:30.78 | ||||||
| 9 | 1:14.72 | 1:17.04 | 2:31.76 | ||||||
| 10 | 1:15.24 | 1:18.23 | 2:33.47 | ||||||
| 11 | 1:17.06 | 1:17.12 | 2:34.18 | ||||||
| 12 | 1:14.80 | 1:19.72 | 2:34.52 |