| Box Width: | 250px |
| Color: | fdc250 |
| The Seasider | |
| Type: | Regional rail |
| Status: | Operational |
| Operator: | Dunedin Railways |
| Start: | Dunedin Railway Station |
| End: | Waititi Station |
| Journeytime: | 2-2.5 Hours |
The Seasider is a tourist train in the South Island of New Zealand, operated by the Dunedin Railways along the Main South Line between the historic Dunedin Railway Station and Waitati once or twice a month. Since the demise of the Southerner in February 2002 it has been the only regular passenger train on this stretch of line.