Alex O'Loughlin
Steve McGarrett (24 eps)
Scott Caan
Danny "Danno" Williams (24 eps)
Grace Park
Kono Kalakaua (24 eps)
Daniel Dae Kim
Chin Ho Kelly (24 eps)
Masi Oka
Dr. Max Bergman (24 eps)
Michelle Borth
Catherine Rollins (24 eps)
Alan Ruck
Mr Slater (24 eps)
Daniel Henney
Michael Noshimuri (3 eps)
Lindsay Price
Leilani (2 eps)
Christine Lahti
Doris McGarrett (2 eps)
Will Yun Lee
Sang Min (2 eps)
Treat Williams
Mick Logan (2 eps)
Dennis Chun
Sgt. Duke Lukela (1 eps)
Alan Ritchson
Freddie Hart (1 eps)
Cynthia Watros
Katie Burgess (1 eps)
Emily Alyn Lind
Lucy (1 eps)
Tristan Lake Leabu
Ethan Awana (1 eps)
Guy Wilson
Jake Madsen (1 eps)
Summer Glau
Maggie Hoapili (1 eps)
Matt Gerald
Warrick (1 eps)
Bai Ling
Esmerelda (1 eps)
Robbie Amell
Billy Keats (1 eps)
Jack Dimich
Randy Thorpe (1 eps)
Jere Burns
Spencer Madsen (1 eps)
Arielle Kebbel
Nicole Carr (1 eps)
Sydney Tamiia Poitier
Grace Tilwell (1 eps)
Melinda McGraw
Patricia Slater (1 eps)
Taryn Manning
Mary Ann McGarrett (1 eps)
Matt Bush
Zack Slater (1 eps)
Carlo Rota
Sean Winston (1 eps)
Vanessa Marcil
Dr. Olivia Victor (1 eps)
Amy Sloan
Lindsay O'Connell (1 eps)
Nicole Travolta
Jayne (1 eps)
Rumer Willis
Sabrina Lane (1 eps)
Behati Prinsloo
Behati Prinsloo (1 eps)
Jacquelyn Jablonski
Nina (1 eps)
Jasmine Tookes
Monique (1 eps)
Z Zoccolante
Denise Pope (1 eps)
Janel Parrish
Rebecca Fine (1 eps)
Andrew Lawrence
Eric Russo (1 eps)
Daniel Baldwin
Paul Delano (1 eps)
Jason Scott Lee
Detective Kaleo (1 eps)
Stephanie Jacobsen
Amy Davidson (1 eps)
Alicia Ziegler
Mollie Bennett (1 eps)
Patrick Fischler
Ryan Webb (1 eps)
Greg Wrangler
Brad Powers (1 eps)
Robbie Jones
Josh Lowry (1 eps)
Wiley M. Pickett
Congressman Chris Freed (1 eps)
Peter Weller
Hookman, Curt Stoner (1 eps)
Charlie Murphy
Don McKinney (1 eps)
Richard T. Jones
Governor Sam Denning (1 eps)
William Sadler
John McGarrett (1 eps)
Max Weinberg
Norm (1 eps)
Zoë Bell
Dr. Shanon Morgan (1 eps)