| Official Name: | Princeton Township |
| Settlement Type: | Township |
| Subdivision Type: | Country |
| Subdivision Type1: | State |
| Subdivision Type2: | County |
| Subdivision Name2: | Scott |
| Area Total Km2: | 85.29 |
| Area Land Km2: | 78.91 |
| Area Water Km2: | 6.37 |
| Unit Pref: | Imperial |
| Area Total Sq Mi: | 32.93 |
| Area Land Sq Mi: | 30.47 |
| Area Water Sq Mi: | 2.46 |
| Area Water Percent: | 7.47 |
| Population As Of: | 2000 |
| Population Total: | 1466 |
| Population Density Km2: | 18.6 |
| Population Density Sq Mi: | 48.1 |
| Elevation M: | 199 |
| Elevation Ft: | 653 |
| Coordinates: | 41.6942°N -90.3842°W |
| Blank Name: | GNIS feature ID |
| Blank Info: | 0468578 |
Princeton Township is a township in Scott County, Iowa, USA. As of the 2000 census, its population was 1,466.
Princeton Township covers an area of 32.93sqmi and contains one incorporated settlement, Princeton. According to the USGS, it contains five cemeteries: Fessler, Nowlin, Oak Ridge, Princeton City and Salem.
The streams of Bud Creek, Cordova Slough, Old Channel Lost Creek, South Fork Lost Creek, Wapsipinicon River and Whiskey Run Creek run through this township.