Bredenbek is a municipality, located in the district of Rendsburg-Eckernförde in the German Bundesland of Schleswig-Holstein.

The highway "Autobahn 210" from Kiel to Rendsburg passes near the south of the village.

Bredenbek was first mentioned in the year 1264 in the town's book of Kiel, named as "de Bradenbeke".

The name of "Bredenbek" consists of two Low German words, brede for "flat" and bek for "creek".

Currently 96 children, from the 1st to the 4th grade, attend the primary school, which is situated at the center of the village.