| Official Name: | Sulfat |
| Native Name: | Сульфат |
| Settlement Type: | Settlement |
| Pushpin Map: | Russia Buryatia#Russia |
| Subdivision Type: | Country |
| Subdivision Name: | Russia |
| Subdivision Type1: | Region |
| Subdivision Name1: | Republic of Buryatia |
| Subdivision Type2: | County |
| Subdivision Type3: | District |
| Subdivision Name3: | Selenginsky District |
| Subdivision Type4: | Municipality |
| Timezone1: | Irkutsk Time |
| Utc Offset1: | +8:00 |
| Postal Code: | 671282 |
| Coordinates: | 51.35°N 139°W[1] |
| Population Total: | 18 |
| Population As Of: | 2010 |
| Area Code: | +7 30145 |
Sulfat (Russian: Сульфат) is a rural locality (a settlement) in Selenginsky District, Republic of Buryatia, Russia. The population was 18 as of 2010.[2]
Sulfat is located 16 km northeast of Gusinoozyorsk (the district's administrative centre) by road. Tokhoy is the nearest rural locality.[3]