| Tennessee Reef | |
| Location: | Caribbean |
| Pushpin Map: | Florida#Caribbean |
| Country: | United States |
| Type: | reef |
Tennessee Reef is a coral reef located within the Florida Keys National Marine Sanctuary. It lies to the southeast of Long Key. It consists of drowned (deep) spur-and-groove reef. Much of the reef is within a designated "Research Only" zone.
An unmanned reef light is located near the reef.
