The Tampa Bay area is a major metropolitan area surrounding Tampa Bay on the Gulf Coast of Florida in the United States. It includes the main cities of Tampa, St. Petersburg, and Clearwater. It is the 17th-largest metropolitan area in the United States, with a population of 3,175,275 as of the 2020 U.S. Census.

Tampa Bay is a large natural harbor and shallow estuary connected to the Gulf of Mexico on the west-central coast of Florida, comprising Hillsborough Bay, McKay Bay, Old Tampa Bay, Middle Tampa Bay, and Lower Tampa Bay. The largest freshwater inflow into the bay is the Hillsborough River, which flows into Hillsborough Bay in downtown Tampa. Many other smaller rivers and streams also flow into Tampa Bay, resulting in a large watershed area.