Jameln is a municipality in the district Lüchow-Dannenberg, in Lower Saxony, Germany. Jameln is part of the Samtgemeinde ("collective municipality") Elbtalaue.

The main village in the municipality is Jameln, with around 450 inhabitants.

Since the Gebietsreform [de] (municipality reform) in 1972, Jameln consists of ten villages:

• Breese im Bruche
• Breselenz
• Breustian
• Jameln
• Langenhorst
• Mehlfien
• Platenlaase
• Teichlosen
• Volkfien
• Wibbese

Additionally, there are three hamlets (Wohnplätze [de]):

• Hoheluft
• Jamelner Mühle
• Krammühle

Before 1972, Hoheluft belonged to Volkfien, Jamelner Mühle to Jameln and Krammühle to Breselenz.

Mathematician Bernhard Riemann (1826–1866) was born in Breselenz.