Three new species of the genus Inga (Mimosaceae) are described as part of the taxonomical treatment of the family for the Flora of the Guianas (Guyana, Suriname, French Guiana): Inga albicoria, I. mitaraka and I. nouragensis. All three are tree species and take place in the section Bourgonia, thus enhancing the importance of this particular group of the genus which is highly diversified in the Guianas. Two of them also occur in Brazilian Amazonia.