Sindhudurg Fort is a historical sea fort located in Arabian Sea near the Konkan region of Maharashtra in Western India. The fort, commissioned by Chhatrapati Shivaji, was constructed between 1664 and 1667. The fort lies off the shore of Malvan taluka of the Sindhudurg District in the Konkan region of Maharashtra, 450 kilometres (280 mi) south of Mumbai. It is a protected monument under the Archaeological Survey of India.

Shivaji I was an Indian ruler and a member of the Bhonsle Dynasty. Shivaji carved out his own independent kingdom from the declining Adilshahi Sultanate of Bijapur that formed the genesis of the Maratha Empire. In 1674, he was formally crowned the Chhatrapati of his realm at Raigad Fort.