| Cayler Prairie State Preserve | |
|---|---|
| Cayler Prairie | |
IUCN category V (protected landscape/seascape) | |
.jpg) The True Prairie: Cayler Prairie, Iowa diorama at the Milwaukee Public Museum | |
  Location in Iowa  Location in United States | |
| Location | Dickinson County, Iowa |
| Nearest city | Spirit Lake, IA |
| Area | 160 acres (65 ha) |
| Established | 1971 |
| Governing body | Iowa Department of Natural Resources |
Cayler Prairie State Preserve is a 160-acre land parcel of tallgrass prairie located in the northwest region of the U.S. state of Iowa in Dickinson County near Spirit Lake. It is a National Natural Landmark.