The Djerimanga also known as the Wulna are an Indigenous Australian people of the Northern Territory.
Wulna country consisted of some 1200mi2 on the coastal plain where the Adelaide River debouches into the Timor Sea, north to the tip of Cape Hotham, west to Gunn Point and the Coolalinga Region, south to Manton Dam. Including Accacia Aboriginal Community and eastwards as far as the Mary River floodplains. Humpty Doo Station, Koolpinyah Station and Djukbinj National Park are also situated within these traditional boundaries. Historically, the Wulna had a southern inland extension of their land as far as the Margaret River and the Ringwood Range, but lost it to the eastern Djowei.
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The Djerimanga spoke Wulna (Wuna) an Indigenous language that is now extinct.