Upper Tampa Bay Park, Natural preserve and archaeological site in Tampa, United States.

Upper Tampa Bay Park occupies the Double Branch Peninsula, about three miles southeast of Oldsmar in Hillsborough County. The county has left it minimally developed because the environment is fragile. Within it lies the Upper Tampa Bay Archeological District, listed on the National Register of Historic Places on December 10, 1985, with shell mounds left by the Tocobaga.

The Double Branch Peninsula was inhabited by the Tocobaga from about 900 AD until the 1500s, who left mounds of shellfish. The Upper Tampa Bay Archeological District was added to the National Register of Historic Places on December 10, 1985.

Shell mounds scattered across the grounds were built by the Tocobaga people over many centuries as they settled and lived along the waterways. Walking through the park, you can see where these communities gathered and how they connected to the water and land.

The park sits on the Double Branch Peninsula, about three miles southeast of Oldsmar. Canoe and kayak rentals are offered for paddling Double Branch Creek. Observation decks, picnic shelters, a playground, a nature center and walking trails are available; development is minimal because the environment is fragile.

The protected waters attract manatees, dolphins, and roseate spoonbills, which visitors may spot from observation points along the trails. These animals thrive in the coastal habitats and add to the experience of exploring this lesser-known corner of the Tampa Bay area.