Seeve is a river of Lower Saxony, Germany, a tributary of the Elbe. It is approximately 40 km (25 mi) long.

The municipality of Seevetal is named after this river.

The Seeve source located is near Wehlen, south-east of Undeloh in the northern part of the Lüneburg Heath at an elevation of about 67 metres. It passes Holm, Lüllau, Jesteburg, Bendestorf, Ramelsloh, Horst, Lindhorst, Hittfeld, Karoxbostel, Glüsingen, Maschen and Hörsten. It then flows into the Elbe between Over and Wuhlenburg.

In Holm and Horst there are barrages to drive watermills. Just before joining the Elbe, the Seeve passes the natural reserve Untere Seeveniederung [de].

The Seeve has a relatively steady, low water temperature throughout the year of 7 °C (45 °F) and is known as coldest river in northern Germany.

• List of rivers of Lower Saxony