| Petaluma Downtown | |
| Style: | SMART |
| Coordinates: | 38.2374°N -122.6351°W |
| Mapframe: | yes |
| Mapframe-Zoom: | 14 |
| Address: | 220 Lakeville Street, Petaluma, California |
| Country: | United States |
| Line: | SMART Mainline Subdivision |
| Connections: | Sonoma County Transit[1] Petaluma Transit |
| Platform: | 1 side platform |
| Tracks: | 1 (with gauntlet track) |
| Former: | Petaluma |
| Parking: | 50 spaces[2] |
| Bicycle: | 13 racks 12 secure spaces |
| Opened: | 1914 (NWP) (SMART preview)[3] (full service) |
| Accessible: | Yes |
| Code: | PET |
| Elevation: | 14.8 ft (4.5 m) |
| Zone: | 3 |
| Other Services Header: | Former services |
| Other Services Collapsible: | yes |
Petaluma Downtown station is a Sonoma–Marin Area Rail Transit station in Petaluma. It opened to preview service on June 29, 2017;[4] full commuter service commenced on August 25, 2017. A new platform and facilities were constructed adjacent to the historic Northwestern Pacific Railroad station building,[5] which opened in 1914.[6] It is the system's first station to open in the city, with Petaluma North station set to open later.