Réservoir-Dozois (French pronunciation: [ʁezɛʁvwaʁ dozwa]) is an unorganized territory in the Abitibi-Témiscamingue region of Quebec, Canada.

It is the largest of five unorganized territories in the La Vallée-de-l'Or Regional County Municipality and entirely part of the La Vérendrye Wildlife Reserve.

It is named after the Dozois Reservoir, a large reservoir which formed after the construction of the Bourque Dam on the Ottawa River in 1949.

In turn, the name Dozois comes from Nazaire-Servule Dozois (1859-1932), a missionary in the Témiscamingue area and assistant general of the Oblates from 1904 to 1932.

[4] The territory has had no inhabitants in any census since 1986, except in 1991, when it had a population of 115.