The Swat River (Pashto: د سوات سیند) is a river in Khyber-Pakhtunkhwa Province, Pakistan. Its source is in the Hindukush Mountains, from where it flows through the Kalam Valley and Swat District. In then skirts Lower Dir District and flows through Malakand District to enter the Kabul River at Charsadda in the Peshawar valley.

The Swat River irrigates large areas of Swat District and contributes to the fishing industry of the region. Ayub Bridge is one of the attractions for visitors. The scenery attracts many tourists from all over Pakistan during the summer.

There are two main hydro-electric power projects on canals from the Swat River which generate electricity for local usage.

The Lower Swat Valley is rich in archaeological sites.

The Swat River is mentioned in Rig Veda 8.19.37 as the Suvastu river. It is said^[where?] that Alexander the Great crossed the Swat River with part of his army before turning south to subdue the locals at what are now Barikoot and Odegram.

It is also a place of origin of the Shrivastavas,(river Shrivastu) a sub clan of Kayastha, Indo-Aryan group.