Turtle Mound, Archaeological site in New Smyrna Beach, Florida, United States.

Turtle Mound is a 2-acre shell midden of mostly oyster shells rising 35–50 feet (11–15 m) and running over 600 feet (180 m) along the Mosquito Lagoon shoreline. Its broad, rounded form is covered by a dense maritime hammock, with patches of bare earth and rock showing through. The top is irregular and tree-lined, and the mound meets the water at a narrow pale shoreline.

Timucuan people built this mound gradually between 800 and 1400 AD by repeatedly visiting and discarding shell waste. The long construction period shows it served as an important coastal gathering spot for centuries.

The mound's name comes from its turtle-like profile, a toponym first printed on a map in William Bartram's Travels (1791). The Timucua who left the shells also caught reptiles and small mammals here, and the site may have served as a refuge during hurricanes. A 1923 study found its flora largely tropical, and rare plants still grow on the shell-rich slope.

The site is reached by elevated boardwalks that run through a protected natural area and lead to viewing platforms. Arrive early if possible, as midday sun is intense and shaded spots are sparse along the way.

Spanish sailors recognized this mound from far out at sea and used it for navigation because its height made it visible from miles away. This navigation role connected two separate periods of history at the same location.