Oasi Lago di Campolattaro, Nature reserve in Province Benevento, Italy.

The Oasi Lago di Campolattaro is a WWF Italia protected area established in 2003 in the Tammaro river valley, on the land of Campolattaro and Morcone in the province of Benevento. It safeguards the wetland formed by the river's floodplain and an artificial lake, and lies within the Special Protection Area Invaso del Fiume Tammaro (IT8020015) and the Alta Valle del Fiume Tammaro site of community interest (IT8020001).

The protected area was created through the damming of the Tammaro River and was officially established as a WWF oasis in 2003. This designation marked an important step in safeguarding the water territory and its habitats.

The oasis is managed by WWF Italia, which established it in 2003. Its entrance lies on provincial road 100 at Località Selvapiana, Contrada Cuffiano, in the municipality of Morcone, while the wetland itself extends across the Tammaro valley between Morcone and Campolattaro. The site belongs to the Special Protection Area Invaso del Fiume Tammaro (IT8020015) and to the Site of Community Importance Alta Valle del Fiume Tammaro (IT8020001).

The nature reserve can be reached from the SS 88 road, which runs about 20 kilometers from Benevento toward Campobasso. You also have additional access routes available from the A1 and A16 highways.

The oasis lies within the Special Protection Area "Invaso del Fiume Tammaro" (ZPS IT8020015) and the Site of Community Importance "Alta Valle del Fiume Tammaro" (SIC IT8020001). Its entrance is on provincial road 100 at Località Selvapiana, Contrada Cuffiano, in the municipality of Morcone.