David III or IV (, "davit' III/IV") was a 15th-century Catholicos-Patriarch of Georgia known from the group of documents dated from 1435 to 1439. They testify to David's efforts to restore the patriarchal see of Mtskheta from the devastation of Timur's invasions earlier that century. David's tenure coincided with the Council of Ferrara held from 1438 to 1439, at which the Georgian delegates rejected the union with the Roman Catholic Church.