| Nirayama | |
| Native Name Lang: | ja |
| Settlement Type: | Former municipality |
| Pushpin Map: | Japan |
| Pushpin Map Caption: | Location in Japan |
| Coordinates: | 35.0533°N 138.9455°W |
| Subdivision Type: | Country |
| Subdivision Name: | Japan |
| Subdivision Type1: | Region |
| Subdivision Name1: | Chūbu (Tōkai) |
| Subdivision Type2: | Prefecture |
| Subdivision Name2: | Shizuoka Prefecture |
| Subdivision Type3: | District |
| Subdivision Name3: | Tagata |
| Extinct Title: | Merged |
| Extinct Date: | April 1, 2005 (now part of Izunokuni) |
| Leader Title: | Mayor |
| Leader Title1: | Vice Mayor |
| Unit Pref: | Metric |
| Area Total Km2: | 34.63 |
| Population Total: | 19,602 |
| Population As Of: | March 1, 2005 |
| Population Density Km2: | 566 |
| Timezone1: | JST |
| Utc Offset1: | +09:00 |
| Blank Name Sec1: | City hall address |
was a town located in Tagata District, Shizuoka Prefecture, Japan.
As of March 1, 2005, the town had an estimated population of 19,602 and a density of 566 persons per km2. The total area was 34.63 km2.
On April 1, 2005, Nirayama, along with the towns of Izunagaoka and Ōhito (all from Tagata District), was merged to create the city of Izunokuni and thus it no longer exists as an independent municipality.
During the Kamakura and Muromachi period, Niirayama was the site of a castle belonging to the Hōjō clan, and the later Hōjō clan. During the Edo period, it was the location of the daikansho offices of the Tokugawa shogunate controlling Izu Province.
Known for its strawberry crop, Nirayama sees many visitors from bigger cities (such as Tokyo) coming for seasonal picking and the views of Mount Fuji.