Egmont Key State Park is a Florida State Park located on Egmont Key, at the mouth of Tampa Bay, in the state of Florida, United States. It lies southwest of Fort DeSoto Park. It can only be reached by boat or ferry. The Egmont Key Lighthouse and the ruins of Fort Dade, a Spanish-American War era fort, are located in the park. Egmont Key is in Hillsborough County in a narrow strip of the county that extends along the Tampa Port Shipping Channel.