| Official Name: | Cass Township |
| Settlement Type: | Township |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Indiana |
| Subdivision Type2: | County |
| Subdivision Name2: | LaPorte |
| Government Type: | Indiana township |
| Area Total Sq Mi: | 36.38 |
| Area Land Sq Mi: | 36.38 |
| Area Water Sq Mi: | 0 |
| Population As Of: | 2020 |
| Population Footnotes: | [1] |
| Population Total: | 1825 |
| Population Density Sq Mi: | 50.4 |
| Elevation Footnotes: | [2] |
| Elevation M: | 215 |
| Elevation Ft: | 705 |
| Coordinates: | 41.3864°N -86.8681°W |
| Blank Name: | FIPS code |
| Blank Info: | 18-10720[3] |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 453165 |
Cass Township is one of twenty-one townships in LaPorte County, Indiana. As of the 2020 census, its population was 1,825 (a tiny decrease of 1,833 from 2010[4]) and it contained 764 housing units.
Cass Township was established in 1848. It was named for Lewis Cass, Democratic candidate in the 1848 United States presidential election.[5]
According to the 2010 census, the township has a total area of, all land.[4]