Lake of the Woods is a township in the Canadian province of Ontario, located within the Rainy River District. The township is located on the eponymous Lake of the Woods, consisting of mainland in the south-east part of the lake, the southern shores of Aulneau Peninsula, along with several islands in the lake, including Big Island and Bigsby Island. It fully surrounds the Anishnaabeg of Naongashiing, Big Grassy River 35G, Big Island Mainland 93, and Saug-a-Gaw-Sing 1 First Nation reserves.