The great ground dove (Gallicolumba nui) is an extinct species of bird in the Columbidae family. It was found in Mangaia in the southern Cook Islands, and in French Polynesia where subfossil bones between 1-2000 years old have been found in the Marquesas, as well as between 750-1250 years old at the Fa'ahia early occupation site on Huahine in the Society Islands.