Lamantin Island (Bulgarian: остров Ястреб, romanized: ostrov Lamantin, IPA: [ˈɔstrof lɐmɐnˈtin]) is the partly ice-free island 812 m long in southwest–northeast direction and 318 m wide in the Dannebrog Islands group of Wilhelm Archipelago in the Antarctic Peninsula region.

Its surface area is 15.8 ha.

[1] The feature is so named because of its shape supposedly resembling a manatee ('lamantin' in Bulgarian), and in association with other descriptive names of islands in the area.

This article includes information from the Antarctic Place-names Commission of Bulgaria which is used with permission.

This Wilhelm Archipelago location article is a stub.