Notogomphus praetorius is a species of ragonfly in family Gomphidae. It is found in Angola, the Republic of the Congo, the Democratic Republic of the Congo, Malawi, Mozambique, Namibia, South Africa, Zambia, and Zimbabwe. Its natural habitats are subtropical or tropical moist lowland forests, dry savanna, moist savanna, subtropical or tropical dry shrubland, subtropical or tropical moist shrubland, and rivers.