Jason Momoa

Arthur Curry / Aquaman

Amber Heard

Mera

Willem Dafoe

Nuidis Vulko

Patrick Wilson

King Orm Marius / Ocean Master

Nicole Kidman

Atlanna

Dolph Lundgren

King Nereus

Yahya Abdul-Mateen II

David Kane / Black Manta

Temuera Morrison

Thomas Curry

Ludi Lin

Captain Murk

Michael Beach

Jesse Kane (Manta's Father)

Randall Park

Dr. Stephen Shin

Graham McTavish

King Atlan

Leigh Whannell

Cargo Pilot

Tainui Kirkwood

Young Arthur (3 Years Old)

Tamor Kirkwood

Young Arthur (3 Years Old)

Denzel Quirke

Young Arthur (3 Years Old)

Kaan Guldur

Young Arthur (9 Years Old)

Otis Dhanji

Young Arthur (13 Years Old)

Kekoa Kekumano

Young Arthur (16 Years Old)

Julie Andrews

Karathen (voice)

John Rhys-Davies

Brine King (voice)

Djimon Hounsou

King Ricou (voice)

Andrew Crawford

Brine King / King Ricou (mocap)

Sophia Forrest

Fisherman Princess

Natalia Safran

Queen Rina

Micah Ohlman

Newscaster

Jack Andrew

Mike (Bully)

Frankie Creagh-Leslie

Matt (Bully)

Sophia Emberson-Bain

Tour Guide (Aquarium)

Ilya Melnikoff

Submarine Captain

Hank Amos

Submarine Pirate

Kyryl Koltsov

Submarine Crew Member

Patrick Cox

Cue Ball

Luke Owen

Biker

Robert Longstreet

Professor James

Devika Parikh

Newscaster Morgan

Sonny Le

Metalsmith

Jon Fabian

Italian Vendor

Mabel Tamone

Italian Young Girl

Rita Dinardo

Italian Old Woman

Vincent B. Gorce

Italian Bell Father

Joshua Levinson

Atlantean Soldier #2

Jordy Campbell

Arthur's Classmate (uncredited)