The species of the genus Leucorhynchia Crosse, 1867 from the tropical Indo- Pacific, collected during the Tropical Deep-Sea Benthos expeditions, directed by IRD and MNHN, in Madagascar, Reunion Island, Mayotte Island, Mozambique, New Caledonia, Vanuatu, Fiji, Solomon Islands, Philippines Islands, Society Islands, and Papua New Guinea are studied. For their correct identification, we have studied all the type material of the previously known species, available in different museums where they were deposited, verifying the possible existing synonymies and describing the new species found. From Leucorhynchia caledonica and L. tricarinata, in addition to the type material, we have used topotypes for a more detailed study. In total, we have studied 87 species, from both shallow and deep water, resulting in 77 new to science. When possible, each species was illustrated using micrographs from scanning electron microscope (SEM), discussing their specific variability and providing information about the habitat, geographical distribution and bathymetric range. All known species from the western coast of Africa are shown for comparison. Radular and opercular data related to the species Leucorhynchia perpolita n. sp. and Leucorhynchia robusta n. sp. were shown.