The 2018–2020 list of the world’s 25 most endangered primates has seven species from Africa, five from Madagascar, seven from Asia, and six from the Neotropics (Appendix: Table 1). Indonesia, Brazil, Ghana and Cote d’Ivoire each have three, Nigeria and Tanzania two, and China, Myanmar, India, Bhutan, Sri Lanka, Vietnam, Argentina, Ecuador, Peru, Mexico, Guatemala, Nicaragua, Honduras, El Salvador, Costa Rica, Panama, Bolivia, Guinea-Bissau, Liberia, Republic of Guinea, Senegal, Sierra Leone, Togo, Benin and Kenya each have one. Twelve of the primates were not on the previous (2016–2018) list (Appendix: Table 3). Eight of them are listed as among the world’s most endangered primates for the first time. The Rondo dwarf galago, kipunji, Tana River red colobus and indri had already been on previous iterations, but were subsequently removed in favour of other highly threatened species. The 2018–2020 list contains two members each of the genera Piliocolobus and Trachypithecus, thus particularly highlighting the severe threats that large primates are facing in all of the world’s primate habitat regions