| Former municipality | |
| Since | March 28, 2005 |
| Currently part of | part of Kashiwa |
| Location | |
| Country | Japan |
| Region | Kantō region |
| Prefecture | Chiba |
| District | Higashikatsushika District |
| Physical characteristics | |
| Area | 41.99 km² |
| Population (as of April 2005) | |
| Total | 46,875 |
| Density | 1116/km² |
| Symbols | |
| Tree | Castanopsis |
| Flower | Sunflower |
Shōnan (沼南町 Shōnan-machi) was a town located in Higashikatsushika District, Chiba Prefecture, Japan.
On April 1, 1889 the villages of Kazahaya and Tega were established within the district of Minamisōma District, Chiba. On April 1, 1897, Minamisōma District merged with Higashikatsushika District. Shōnan Village was formed on March 30, 1955. through the merger of Kazahaya and Tega. On February 1, 1964 Shōnan was elevated to town status. Shōnan was merged into the expanded city of Kashiwa on March 28, 2005, and thus no longer exists as an independent municipality.
In April 2005 (the last data available before its merger into Kashiwa), the town had an estimated population of 46,875 and a population density of 1116 persons per km². Its total area was 41.99 km².