Fulderaue - Ilmenaue, Nature reserve between Bingen am Rhein and Ingelheim am Rhein, Germany.

Fulderaue-Ilmenaue is a protected area along the Rhine that encompasses two river islands and diverse wetland habitats. The site features wetland biotopes with various vegetation types and water bodies that support waterfowl.

The Fulder Aue was administered by monasteries from medieval times, first by Johannisberg, then later by Fulda. This ecclesiastical use shaped the area for centuries before it eventually came under modern nature protection.

The reserve's name comes from its two Rhine islands, the Fulder Aue and the Ilmen Aue, which lie in the floodplain between Bingen and Ingelheim. The area belongs to the Mainz-Gaulsheimer Rheinaue, part of the Ingelheimer Rheinebene natural region, and is managed as a nature reserve under a 1995 ordinance.

The protected area is accessible via well-marked hiking and cycling paths that run through the wetlands. Winter is the best time for bird watching, when migratory birds rest here.

The reserve covers 338.08 hectares and was placed under protection by decree on 9 January 1995. It takes in part of the Rhine floodplain, including the islands of Fulder Aue and Ilmen Aue and the water between them, with the A60 running along its southeastern edge and the Rhine along its northern edge.