Decentralised Administration of Peloponnese, Western Greece and Ionian Islands (DA-PWI) is a public authority. Its main activities are (1) urban planning and environmental policy issues; (2) technical inspection of transport, port, cross-regional infrastructure and generally all types of infrastructure; and (3) national resources and forest management issues.

It is the state authority for the supervision of three regions in Greece: Region of Western Greece, Region of Peloponnese and Region of Ionian Islands. Its technical expertise is supported by its ongoing cooperation with Centres of Excellence, such as the Centre for Innovation at University of Patras and the associated Science & Technology Park.