Logan Township is one of fourteen townships in Dearborn County, Indiana. As of the 2010 census, its population was 3,541 and it contained 1,290 housing units.
Logan Township took its name from Logan Creek.
According to the 2010 census, the township has a total area of , of which (or 99.33%) is land and (or 0.67%) is water.
The township contains one cemetery, Logan.