Lists of IUCN Red List endangered species
On 29 January 2010, the IUCN Red List of Threatened Species identified 5220 (2754 animals, 1 fungus, 2464 plant, 1 protist) endangered species, subspecies and varieties, stocks and sub-populations.
For IUCN lists of endangered species by kingdom, see:
- Animals (kingdom Animalia) — IUCN Red List endangered species (Animalia)
- Amphibians — List of endangered amphibians
 - Birds — List of endangered birds
 - Fish — List of endangered fishes
 - Invertebrates — List of endangered invertebrates
- Arthropods — List of endangered arthropods
- Insects — List of endangered insects
 
 - Molluscs List of endangered molluscs
 
 - Arthropods — List of endangered arthropods
 - Mammals — List of endangered mammals
 - Reptiles — List of endangered reptiles
 
 - Fungi (kingdom Fungi) — IUCN Red List endangered species (Fungi)
 - Plants (kingdom Plantae) — IUCN Red List endangered species (Plantae)
 - Protists (kingdom Protista) — IUCN Red List endangered species (Protista)