- Rhea americana (Greater Rhea)
- Rhea americana albescens
- Rhea americana americana
- Rhea americana araneipes
- Rhea americana intermedia
- Rhea americana nobilis
- Rhea pennata (Lesser Rhea)
- Rhea pennata garleppi
- Rhea pennata garleppi/tarapacensis (Lesser Rhea (Puna))
- Rhea pennata pennata (Lesser Rhea (Darwin’s))
- Rhea pennata tarapacensis