Imperatriz is a Brazilian municipality located in the state of Maranhão. The city is situated along the northeastern bank of the Tocantins River and serves as a point on the border with the neighboring state of Tocantins.
The urban area is crossed by the Belém-Brasília Highway, which provides a primary transportation link through the region. It is defined geographically by its position relative to the river and its proximity to the state boundary.