- Sam Worthington Jake Sully
- Zoe Saldaña Neytiri
- Sigourney Weaver Kiri
- Stephen Lang Coronel Miles Quaritch
- Kate Winslet Ronal
- Cliff Curtis Tonowari
- Joel David Moore Norm Spellman
- CCH Pounder Mo'at
- Edie Falco General Ardmore
- Jemaine Clement Dr. Ian Garvin
- Brendan Cowell Capt. Mick Scoresby
- Giovanni Ribisi Selfridge
- Chloe Coleman Young Lo'ak
- Matt Gerald Recom Wainfleet
- Britain Dalton Lo'ak
- Jamie Flatters Neteyam
- Trinity Jo-Li Bliss Tuktirey
- Jack Champion Spider
- Bailey Bass Tsireya
- Filip Geljo Aonung
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