Themen'sshot put event at the2003 IAAF World Indoor Championships was held on 14 March 2003.
The winning margin was 1 cm which as of July 2024 remains the only time the men's shot put was won by less than 8 cm at these championships.
| Gold | Silver | Bronze |
Manuel Martínez Spain | John Godina United States | Yuriy Bilonoh Ukraine |
Qualifying performance 20.25 (Q) or 8 best performers (q) advanced to the Final.
| Rank | Athlete | Nationality | #1 | #2 | #3 | Result | Notes |
|---|---|---|---|---|---|---|---|
| 1 | John Godina | United States | 20.88 | 20.88 | Q, SB | ||
| 2 | Yuriy Bilonoh | Ukraine | 20.55 | 20.55 | Q | ||
| 3 | Joachim Olsen |  Denmark | X | 20.13 | 20.45 | 20.45 | Q, SB |
| 4 | Manuel Martínez | Spain | 20.13 | 20.36 | 20.36 | Q, SB | |
| 5 | Justin Anlezark |  Australia | X | 20.25 | 20.25 | Q | |
| 6 | Tepa Reinikainen |  Finland | 20.24 | 20.04 | 20.12 | 20.24 | q |
| 7 | Arsi Harju | Finland | 20.19 | X | X | 20.19 | q |
| 8 | Milan Haborák |  Slovakia | X | 19.95 | – | 19.95 | q |
| 9 | Pavel Chumachenko |  Russia | 19.71 | X | X | 19.71 | |
| 10 | Rutger Smith |  Netherlands | 19.06 | 19.59 | X | 19.59 | |
| 11 | Kevin Toth | United States | X | X | 19.35 | 19.35 | |
| 12 | Ralf Bartels |  Germany | 19.32 | 19.15 | X | 19.32 | |
| Paolo Dal Soglio |  Italy | X | X | X | NM | ||
| Gheorghe Guset |  Romania | NM |
| Rank | Athlete | Nationality | #1 | #2 | #3 | #4 | #5 | #6 | Result | Notes |
|---|---|---|---|---|---|---|---|---|---|---|
 | Manuel Martínez | Spain | 20.73 | 21.14 | 21.07 | 21.01 | 20.70 | 21.24 | 21.24 | SB |
 | John Godina | United States | X | X | 21.23 | X | X | 20.66 | 21.23 | SB |
 | Yuriy Bilonoh | Ukraine | 21.13 | 20.92 | 21.07 | X | 20.83 | X | 21.13 | |
| 4 | Arsi Harju | Finland | X | 20.64 | 20.71 | 20.96 | 20.90 | X | 20.96 | |
| 5 | Justin Anlezark | Australia | 20.04 | X | 20.65 | 20.03 | X | 19.91 | 20.65 | |
| 6 | Tepa Reinikainen | Finland | 20.13 | 20.44 | 20.53 | 20.52 | X | 20.59 | 20.59 | |
| 7 | Milan Haborák | Slovakia | 19.67 | 20.04 | 20.08 | X | X | 20.21 | 20.21 | |
| 8 | Joachim Olsen | Denmark | 20.12 | X | X | X | X | 19.93 | 20.12 |
