| Fred Gannon Rocky Bayou State Park | |
| Iucn Category: | IV |
| Photo Width: | 250px |
| Map: | Florida#USA |
| Location: | Okaloosa County, Florida, USA |
| Nearest City: | Niceville, Florida |
| Coordinates: | 30.4969°N -86.4269°W |
| Area Acre: | 357 |
| Established: | 1966 |
| Governing Body: | Florida Department of Environmental Protection |
Fred Gannon Rocky Bayou State Park is a Florida State Park located on the northwestern coast of the U.S. state of Florida, southeast of Niceville. The address is 4281 Highway 20. Native American middens and artifacts can be seen throughout the park.
The park has such amenities as bicycling, birding, boating, canoeing, fishing, hiking, kayaking, picnicking, tubing, wildlife viewing and full camping facilities.
The park's Sand Pine (Pinus clausa) forest has large, mature Sand Pines towering over other scrub vegetation, such as Florida Rosemary (Ceratiola ericoides), Reindeer Moss (Cladonia spp.), and scrub oaks: sand live oak (Quercus geminata), sandhill oak (Quercus inopina), myrtle oak (Quercus myrtifolia), and Chapman's oak (Quercus chapmanii).