| Official Name: | Logan Township |
| Settlement Type: | Township |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Indiana |
| Subdivision Type2: | County |
| Subdivision Name2: | Fountain |
| Government Type: | Indiana township |
| Area Total Sq Mi: | 22.62 |
| Area Land Sq Mi: | 22.23 |
| Area Water Sq Mi: | 0.38 |
| Population As Of: | 2020 |
| Population Total: | 3377 |
| Population Density Sq Mi: | auto |
| Elevation Footnotes: | [1] |
| Elevation M: | 207 |
| Elevation Ft: | 679 |
| Coordinates: | 40.2875°N -87.2108°W |
| Blank Name: | FIPS code |
| Blank Info: | 18-44622[2] |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 453579 |
Logan Township is one of eleven townships in Fountain County, Indiana, United States. As of the 2020 census, its population was 3,377 and it contained 1,641 housing units.[3]
The Bethel Church and Graveyard was listed on the National Register of Historic Places in 1995.
According to the 2010 census, the township has a total area of, of which (or 98.28%) is land and (or 1.68%) is water.[4] It contains the town of Attica, which is near the banks of the Wabash River and which has a population of about 3,200 people.
U.S. Route 41,[5] Indiana State Road 28[6] and Indiana State Road 55[7] enter the township from Warren County, across the river to the west; at this point they all share the same route. In passing through Attica, U.S. 41 and State Road 55 go south, while State Road 28 continues east. A Norfolk Southern Railway line also crosses the river into the township; the line continues east-northeast near the river,[8] carrying about 45 freight trains each day.[9]
The township contains five cemeteries. Riverside and Saint Francis of Xavier are on the south edge of Attica, while Hatton is on the southeast side of town. Ruppert lies further to the southeast outside of town, and Clark is in the far northeast corner of the township.