The East African country of Tanzania was surveyed extensively for its fauna of saucer bugs (Heteroptera: Nepomorpha: Naucoridae) in July and August 2010 and August 2013. Previously, two subfamilies, three genera and six species were known from the country. All taxa previously recorded from Tanzania were re-collected, with the exception of two species, Neomacrocoris karimii Poisson and N. usambaricus (Montandon). We added three genera (Aneurocoris, Ctenipocoris, and Laccocoris) and eight species; thus, the known naucorid fauna of Tanzania now includes six genera and 14 species. Included in the collections were two undescribed species of Neomacrocoris. An annotated list and illustrated key to the species are presented.