Ko te Rōpū o te 15 (G-15) he huinga kore tūmatanui i whakatūria hei whakapakari i te mahi tahi me te tuku urupare ki ētahi atu rōpū ao, pēnei i te World Trade Organization (WTO) me te Rōpū o te Whitu. I whakatūria i te Huihuinga Huihuinga o te Rōpū Non-Aligned Movement i Belgrade, Yugoslavia, i te Mahuru 1989, a kei roto i ngā whenua mai i Amerika Latina, Awherika, me Ahia me te whāinga tahi o te whakatipu ake i te tipu me te pai. Ko te G-15 e arotahi ana ki te mahi tahi i waenganui i ngā whenua whakawhanake i roto i ngā wāhi o te haumi, te hokohoko, me te hangarau. Kua whakawhānuihia te mema ki te 18 whenua, engari kua noho tonu te ingoa. Ko Chile, ko Iran, ko Kenya kua uru mai ki te Rōpū o te 15, i te mea kua kore a Yugoslavia i te rōpū; ko Peru, he mema-mema, i whakatau ki te wehe i te G-15 i te 2011.
te mahi tahi i waenganui i ngā whenua whanake i ngā wāhi haumi, tauhokohoko, me te hangarau