| En Name: | Nadvoitsy |
| Ru Name: | Надвоицы |
| Other Lang: | Karelian |
| Coordinates: | 63.9°N 49°W |
| Map Label Position: | right |
| Image Coa: | Coat of arms of Nadvoitsy (2014).gif |
| Federal Subject: | Republic of Karelia |
| Adm District Jur: | Segezhsky District |
| Inhabloc Cat: | Urban-type settlement |
| Mun District Jur: | Segezhsky Municipal District |
| Urban Settlement Jur: | Nadvoitskoye Urban Settlement |
| Mun Admctr Of: | Nadvoitskoye Urban Settlement |
| Pop 2010Census: | 8372 |
| Established Date: | 16th century |
| Current Cat Date: | 1942 |
| Postal Codes: | 186430, 186431 |
| Nadvoitsy population | |
| Label1: | 2010 Census |
| Data1: | 8,372 |
| Label2: | 2002 Census |
| Data2: | 11,073 |
| Label3: | 1989 Census |
| Data3: | 11,514 |
| Label4: | 1979 Census |
| Data4: | 10,655 |
Nadvoitsy (Russian: Надво́ицы; Karelian: Vojačču; Finnish: Vojatsu) is an urban locality (an urban-type settlement) in Segezhsky District of the Republic of Karelia, Russia, located on the shore of Lake Vygozero, 287km (178miles) north of Petrozavodsk, the capital of the republic. As of the 2010 Census, its population was 8,372.
It was established in the 16th century. Urban-type settlement status was granted to it in 1942.
Within the framework of administrative divisions, the urban-type settlement of Nadvoitsy is subordinated to Segezhsky District. As a municipal division, Nadvoitsy, together with six rural localities, is incorporated within Segezhsky Municipal District as Nadvoitskoye Urban Settlement.[1]
Until 2013, the only enterprise in Nadvoitsy was the Nadvoitsy Aluminum Plant which belonged to the Rusal group. In 2013, the aluminum production became unprofitable, and the plant stopped operation, with the prospective of being scrapped. Most of the population in Nadvoitsy is unemployed.[2]
There is a railway station on the railway connecting Petrozavodsk and Murmansk, with infrequent passenger traffic.