The County of Normanby is one of the 37 counties of Victoria which are part of the cadastral divisions of Australia, used for land titles. The county is in the Western District of Victoria bounded by the Glenelg River in the west and the Eumeralla River in the east, by a line through Casterton and Hamilton in the north, and by Bass Strait (Portland Bay) to the south. Larger towns include Hamilton, Portland and Heywood.