Riserva naturale Fiume Fiumefreddo, Regional nature reserve in Calatabiano and Fiumefreddo di Sicilia, Italy.

Riserva naturale Fiume Fiumefreddo is a regional nature reserve straddling the towns of Calatabiano and Fiumefreddo di Sicilia, fed by two natural springs. The river maintains cool water year-round, creating habitat for specialized plant and animal species adapted to these conditions.

The area once consisted of extensive wetlands until mid-20th century land reclamation projects drained most of them. Today this protected zone represents one of the last remaining natural wetland habitats from that period.

The reserve hosts Mediterranean plant life that has become increasingly rare in this region and supports local farming practices. Visitors can observe how this vegetation shapes the landscape and its role in sustaining the area's ecological balance.

The reserve lies near the mouth of the Fiumefreddo river, in the coastal plain south of Fiumefreddo di Sicilia. It can be reached from the SS 114 Messina–Catania road or from the A18 motorway, exiting at the Fiumefreddo toll booth. The river is fed by the Quadara grande springs and by Capo d'acqua, the spring farthest from the sea.

Near the spring pools where the river rises, a stand of Cyperus papyrus siculus survives alongside marsh plants such as reed, sedge and rush, species rare or absent elsewhere in Sicily. The reserve covers about 108 hectares and is the only monitoring station for the aquatic buttercup across central and southern Italy.