Jason Momoa

(Arthur)

Amber Heard

(Mera)

Willem Dafoe

(Vulko)

Patrick Wilson

(King Orm)

Nicole Kidman

(Atlanna)

Dolph Lundgren

(King Nereus)

Yahya Abdul-Mateen

(Manta)

Temuera Morrison

(Tom Curry)

Ludi Lin

(Captain Murk)

Michael Beach

(Jesse (Manta's Father))

Randall Park

(Dr. Stephen Shin)

Graham McTavish

(King Atlan)

Leigh Whannell

(Cargo Pilot)

Tainui Kirkwood

(Young Arthur (Three Years Old))

Tamor Kirkwood

(Young Arthur (Three Years Old))

Denzel Quirke

(Young Arthur (Three Years Old))

Kaan Guldur

(Young Arthur (Nine Years Old))

Otis Dhanji

(Young Arthur (Thirteen Years Old))

Kekoa Kekumano

(Young Arthur (Sixteen Years Old))

Julie Andrews

(Karathen)

John Rhys-Davies

(Brine King)

Djimon Hounsou

(King Ricou)

Andrew Crawford

(Brine King/King Ricou)

Sophia Forrest

(Fisherman Princess)

Natalia Safran

(Queen Rina)