Ponte Tresa (Ticinese: Pont da Tresa) is a former municipality in the district of Lugano in the canton of Ticino in Switzerland. On 18 April 2021 the municipalities of Croglio , Monteggio , Ponte Tresa and Sessa merged to form Tresa.

Ponte Tresa is first mentioned in 818 as ad Tresiae Pontem, though this comes from a 12th-century copy of the earlier document. In 875 it was mentioned as Ponte Tretia. In German it was known as Treisbruck, though this name is no longer used.

The history of the town is closely tied to the Tresa river crossing, which was first mentioned in 590 by Gregory of Tours.