Bremen Township is a township in Delaware County, Iowa, United States.

[1] Bremen Township covers an area of 36.69 square miles (95.02 square kilometers); of this, 0.01 square miles (0.04 square kilometers) or 0.04 percent is water.

Lakes in this township include Tegeler Pond.

(This list is based on USGS data and may include former settlements.)

The township contains two cemeteries: Saint Francis and Saint Peter and Paul.