| En Name: | Tomarinsky District |
| Ru Name: | Томаринский район |
| Image View: | Протока Рудановского в городе Красногорск Сахалинской области.jpg |
| Coordinates: | 47.7667°N 146°W |
| Image Coa: | Coat of Arms of Tomarinsky rayon (Sakhalin oblast).png |
| Federal Subject: | Sakhalin Oblast |
| Adm Data As Of: | December 2011 |
| Adm Ctr Type: | town |
| Adm Ctr Name: | Tomari |
| No Of Cities Towns: | 1 |
| No Of Rural Localities: | 13 |
| Mun Data As Of: | July 2012 |
| Mun Formation1: | Tomarinsky Urban Okrug |
| Area Km2: | 3169.3 |
| Pop 2010Census: | 9457 |
| Urban Pop 2010Census: | 48.0% |
| Rural Pop 2010Census: | 52.0% |
| Website: | http://adm-tomari.ru/ |
| Date: | December 2012 |
Tomarinsky District (Russian: Томари́нский райо́н) is an administrative district (raion) of Sakhalin Oblast, Russia; one of the seventeen in the oblast.[1] Municipally, it is incorporated as Tomarinsky Urban Okrug.[2] It is located in the southwest of the Island of Sakhalin. The area of the district is 3169.3km2.[3] Its administrative center is the town of Tomari. Population: The population of Tomari accounts for 48.0% of the district's total population.