Alex O'Loughlin
Steve McGarrett (22 eps)
Scott Caan
Danny "Danno" Williams (22 eps)
Ian Anthony Dale
Adam Noshimuri (22 eps)
Meaghan Rath
Tani Rey (22 eps)
Beulah Koale
Junior Reigns (22 eps)
Dennis Chun
Duke Lukela (22 eps)
Kimee Balmilero
Dr. Noelani Cunha (22 eps)
Chi McBride
Lou Grover (22 eps)
Taylor Wily
Kamekona Tupuola (22 eps)
Katrina Law
Quinn Liu (22 eps)
Fernando Chien
Kenji Higashi (5 eps)
Rob Morrow
Wes Cullen (2 eps)
Sonny Saito
Hajime Masuda (2 eps)
Brittany Ishibashi
Tamiko Masuda (2 eps)
Presilah Nunez
Dr. Emma Okino (2 eps)
Nia Holloway
Siobhan (2 eps)
John Harlan Kim
Endo (2 eps)
Zachary Knighton
Orville “Rick” Wright (2 eps)
Lance Gross
Lincoln Cole (2 eps)
Katie Wee
Brooke (2 eps)
Eugenia Yuan
Daiyu Mei (2 eps)
Tony Armatrading
Michael Claypool (voice) (2 eps)
Jorge Garcia
Jerry Ortega (1 eps)
Manuel Uriza
Moreno (1 eps)
Brook Kerr
Carol (1 eps)
Marc Menchaca
Jackson Wilcox (1 eps)
Jason Dirden
Akoni (1 eps)
Leith M. Burke
Deputy Director Keawe (1 eps)
Josh Braaten
Nate (1 eps)
Cullen Douglas
Joe Ennis (1 eps)
Stephen Full
Pollack (1 eps)
Joey Lawrence
Aaron Wright (1 eps)
Kevin E. West
Major General Avea (1 eps)
Kirstin Leigh
Yumi Chun (1 eps)
Derek Mears
Kimo (1 eps)
Lisa Kaminir
Mother Superior Decosta (1 eps)
Jonny Berryman
Tunde (1 eps)
Greg Cromer
Brent Garis (1 eps)
Ryan Sypek
Todd (1 eps)
Tom Allen
Scooter (1 eps)
Benito Martinez
DEA Captain Mateo Dias (1 eps)
Taylor Handley
CIA Agent Coen (1 eps)
Onahoua Rodriguez
Carmen Lucia Perez (1 eps)
Michelle Hurd
Renee Grover (1 eps)
Jesse Johnson
Richie Gormican (1 eps)
Metta Sandiford-Artest
Himself (1 eps)
Eric Scanlan
Natano Reigns (1 eps)
Ellen Hollman
Olivia Parks (1 eps)
Cassandra Hepburn
Lana (1 eps)
Dan Amboyer
Preston Parks (1 eps)
Marisol Ramirez
Eileen (1 eps)
Atticus Todd
Lolo Joe (1 eps)
Damien Diaz
Owen (1 eps)
Dion Basco
Bodhi (1 eps)
Gabriel Ellis
Roger Maliah (1 eps)
Chris Ufland
Brian Disalva (1 eps)
Chloe Brooks
Rox (1 eps)
Jay Hernandez
Thomas Magnum (1 eps)
Perdita Weeks
Juliett Higgins (1 eps)
Stephen Hill
Theodore “T.C.” Calvin (1 eps)
Jo Sung
Zhou (1 eps)
Melissa Tang
Erin Hong (1 eps)
Alon Abutbul
Zev Shaham (1 eps)
Alicia Hannah
Ariko (1 eps)
Victoria Gabrielle Platt
Principal Aki (1 eps)
Coby Ryan McLaughlin
Luke (1 eps)
Rogelio T. Ramos
Raul Diaz / Ed Ramirez (1 eps)
Sara Amini
Molly (1 eps)
Chido Nwokocha
Sgt. Michaels (1 eps)
Kate Siegel
Joanna (1 eps)
Lori Pelenise Tuisano
Princess (1 eps)
Marika Domińczyk
Lorena (1 eps)
Chris Vance
Harry Langford (1 eps)
Nicole Steinwedell
Maureen Townsend (1 eps)
Eva De Dominici
Maria (1 eps)
Willie Garson
Gerard Hirsch (1 eps)
Michael Nouri
Oscar Hirsch (1 eps)
Andrea Bogart
Cynthia Dean (1 eps)
Patty McCormack
Tabitha May (1 eps)
Lawrence Pressman
Stanley (1 eps)
Chuck Norris
Sgt. Major Phillips (1 eps)
Leonard Roberts
Capt. Ingram (1 eps)
Mark Dacascos
Wo Fat (1 eps)
Amelia Cooke
Doctor (1 eps)
James Marsters
Victor Hesse (1 eps)
Linda Montana
Rose (1 eps)
Iris Wilhem Norseth
Sister Lauretta (1 eps)
Jimmy Buffett
Frank Bama (1 eps)
Siena Agudong
Olivia (1 eps)
Ian Verdun
Chief Mate Lawson (1 eps)
Gina Hiraizumi
Maile (1 eps)
Christine Lahti
Doris McGarrett (1 eps)
William Sadler
John McGarrett (1 eps)
John Parr
Skeez (1 eps)
Cara Santana
Bonnie (1 eps)
Darnell Kirkwood
Clyde (1 eps)
Sumalee Montano
Yang (1 eps)
Suzanne Cryer
Suzanne (1 eps)
Jack Cutmore-Scott
Gabe / Michael Blanton (1 eps)
Preston Jones
Leo (1 eps)
Kurt Caceres
Pelio (1 eps)
Annika Marks
Marie (1 eps)
Rodney Rowland
Oz (1 eps)
Peter James Smith
Dr. Hong (1 eps)
Gregory Cruz
Eke Mohoe (1 eps)
Luka Bayani
bartender (1 eps)
Bart Johnson
Jake (1 eps)
Gary Nohealii
Christian Hopkins (1 eps)
Rafael Cabrera
DiMarzo (1 eps)
Lobo Sebastian
Hector Acosta (1 eps)
Diana Lu
Sylvia Yang (1 eps)