Swimming at the 2009 Southeast Asian Games – Men's 4 × 100 metre medley relay
# Swimming at the 2009 Southeast Asian Games – Men's 4 × 100 metre medley relay

The Men's 4x100 Medley Relay swimming event at the 2009 SEA Games was held in December 2009.

## Results

### Final

| Place | Nation | Swimmers | Time | Notes |
| - | - | - | - | - |
| 1 | Indonesia | Guntur Pratama Putra Indra Gunawan Glenn Victor Sutanto Triady Fauzi Sidiq | 3:41.72 | GR |
| 2 | Singapore | | 3:44.15 | |
| 3 | Philippines | | 3:46.32 | |
| 4 | Malaysia | | 3:48.93 | |
| 5 | Thailand | | 3:49.45 | |
| 6 | Vietnam | | 3:51.70 | |
| 7 | Laos | | 5:03.54 | |
