Ta Ooisht y Twoaie (Gaelg Albinagh: Uibhist a Tuath, Baarle: North Uist) ny h-ellan ayns ny h-Ellanyn Heear, Nalbin. T'ee ny jeihoo ellan smoo mastey ellanyn ny h-Albey[1] as ny treeoo ellan jeig smoo mastey ny h-ellanyn ta cruinnlaghey yn Vretyn Vooar.[2] T'ee 117 mi ker (303 km²) er eaghtyr, as t'ee beggan ny sloo na Ooisht y Jiass. Ta Ooisht y Twoaie kianglt liorish taagheryn rish Beinn nam Fadhla trooid Griomasaigh, rish Beàrnaraidh, as rish Baile Sear. Faagail magh y niar yiass, ta'n ellan rea er eaghtyr, as t'ee coodit lesh mestey curreeyn moaney, cruink injil, as loghanyn, lesh ny smoo na lieh-chooid jeh'n thalloo coodit lesh ushtey. Ta kuse ennagh jeh ny loghyn jeant seose jeh mestey ushtey oor as ushtey sailjey, as eh shen lhiggey da oayldyn cramp as neuchadjin. She Logh ny Moddee, purt eeasteyragh as ynnyd da thie tashtee, laare ellynyn, as shamyr ghorraghey, y balley smoo er yn ellan.
