Île Thérèse (Therese Island) is an island just under one kilometre off the west coast of Mahé, the largest island of the Seychelles, located. The island has a length of 1.6 km, an area of 0.739 km² (73.9 ha) and reaches a height of 160 m above sea level.
Administratively, it belongs, together with its neighbouring island Conception, is part of the administrative district of Port Glaud. Although the island does not have a permanent Population it is often visited by tourists, not least because of its long sandy beach in the northeast.