| Official Name: | Leyden, Wisconsin |
| Pushpin Map: | Wisconsin#USA |
| Subdivision Type: | Country |
| Subdivision Name: |  United States |
| Subdivision Type1: | State |
| Subdivision Type2: | County |
| Subdivision Name2: | Rock |
| Timezone: | Central (CST) |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Elevation Ft: | 892 |
| Coordinates: | 42.7308°N -89.1289°W |
| Area Code: | 608 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 1568004 |
Leyden is an unincorporated community located in the town of Janesville, Rock County, Wisconsin, United States.
A post office called Leyden was established in 1850, and remained in operation until it was discontinued in 1903.[1] The community was named after Leiden, in the Netherlands.[2]