Monroe Township is one of twenty townships in Allen County, Indiana, United States.

[2] According to the United States Census Bureau, Monroe Township covers an area of 24.73 square miles (64.06 km2), all land.

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

Four Presidents Corners, a monument, was built in 1917 where Monroe Township meets with Jackson, Madison, and Jefferson townships.

The township contains these four cemeteries: Brown, Hoffman, Odd Fellows and Sugar Ridge.