| Official Name: | Pleasant Valley Township |
| Settlement Type: | Township |
| Image Map1: | Map of Illinois highlighting Jo Daviess County.svg |
| Mapsize1: | 150px |
| Map Caption1: | Jo Daviess County's location in Illinois |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Illinois |
| Subdivision Type2: | County |
| Subdivision Name2: | Jo Daviess |
| Leader Title: | Supervisor |
| Leader Name: | Phyllis Miccolis |
| Established Title: | Established |
| Established Date: | November 2, 1852 |
| Area Total Sq Mi: | 36.66 |
| Area Land Sq Mi: | 36.66 |
| Area Water Sq Mi: | 0 |
| Area Water Percent: | 0 |
| Population As Of: | 2010 |
| Population Density Sq Mi: | 7.4 |
| Elevation M: | 206 |
| Elevation Ft: | 676 |
| Coordinates: | 42.2431°N -90.0383°W |
| Timezone: | CST |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Postal Code Type: | ZIP codes |
| Postal Code: | 61028, 61053, 61085 |
| Blank Name: | FIPS code |
| Blank Info: | 17-085-60664 |
| Pop Est As Of: | 2016 |
| Population Est: | 262 |
| Unit Pref: | Imperial |
Pleasant Valley Township is one of 23 townships in Jo Daviess County, Illinois, United States. As of the 2010 census, its population was 273 and it contained 157 housing units.[1]
According to the 2010 census, the township has a total area of, all land.[1]
The township contains Plum River Catholic Cemetery.