| Type: | Stadt |
| Image Coa: | Wappen pritzerbe.png |
| Coordinates: | 52.5°N 40°W |
| Image Plan: | Havelsee in PM.png |
| State: | Brandenburg |
| District: | Potsdam-Mittelmark |
| Amt: | Beetzsee |
| Elevation: | 39 |
| Area: | 66.60 |
| Postal Code: | 14778, 14798 |
| Area Code: | 033834 |
| Licence: | PM |
| Gemeindeschlüssel: | 12 0 69 270 |
| Divisions: | 8 Ortsteile |
| Website: | www.havelsee.de |
| Mayor: | Günter Noack[1] |
| Leader Term: | 2024 - 29 |
| Party: | independent |
Havelsee (pronounced as /de/) is a town in the Potsdam-Mittelmark district, in Brandenburg, Germany. It is situated on the river Havel, 12 km northwest of Brandenburg.
The Pritzerbe Ferry, a vehicular cable ferry, crosses the Havel between Havelsee and Kützkow.
The mayor of Havelsee since 2003 is Günther Noack, he was reelected in 2014 with 83,4 % of the votes.[2]
Over 80% of the area of the borough of Havelsee is covered by overlapping protected areas of various types. These include the natural monument of Weißes Fenn Marzahne as well as 3 nature reserves and 4 SACs.