Frindsbury Extra is a civil parish divided into commercial, suburban residential and rural parts on the Hoo Peninsula in Medway, a ceremonial part of Kent.

It is contiguous with the fully urbanised Frindsbury part of Strood and is bounded by Cliffe and Cliffe Woods to the north, Hoo to the east, and the River Medway to the south-east at Upnor (or Upnor-on-Medway) and a long, narrow meander of the river in the far south.

On Medway Council it has councillors representing the Strood Rural ward currently on almost identical boundaries.

As a lowest-level administrative area, Frindsbury Extra contains the villages or dependent residential localities of: As with Frindsbury Intra, today known interchangeably as North Strood or Frindsbury, which is contiguous with Strood and immediately north of Strood railway station, Wainscott is south of the A289 dual carriageway.

The former council offices of Strood Rural District are in Frindsbury Extra.