Lt./Lt. Cmdr. Harmon "Harm" Rabb, Jr.
David James Elliott
Maj./Lt. Col. Sarah "Mac" MacKenzie
Catherine Bell
Lt. j.g./Lt. Bud Roberts
Patrick Labyorteaux
Adm. A.J. Chegwidden
John M. Jackson
Lt. Cdr. Mic Brumby
Trevor Goddard*
Harriet Sims / Phyllis Diller / Jonie James
Karri Turner
Guest Star
Ned Luke
Guest Star
Montel B. Williams
Guest Star
Mark Metcalf
Chloe Madison
Mae Whitman
Guest Star
Michael Wiseman
Guest Star
Biff McGuire
Mikey Roberts / Antonio
Michael Bellisario
Guest Star
Martin Grey
Guest Star
Peter Brown
Guest Star
Stephen Markle
Guest Star
Richard Herd
Guest Star
Cameron Dye
Guest Star
Anne Lockhart
Lt. Andy Buxton
Locklyn Munro
Guest Star
Briony Behets
Clayton Webb
Steven Culp
Jason Tiner / Petty Officer First Class Jason Tiner / Archie Bond
Chuck Carrington
Capt. Tobias Ingles / Gary Hochausen
Gary Graham
Guest Star
Paul Vincent O'Connor
Guest Star
Tait Smith
Guest Star
Christopher Allport
Guest Star
Mark Moses
Guest Star
Andrew Prine
Guest Star
Everett McGill
Guest Star
Jesse Corti
Lt. Elizabeth 'Skates' Hawkes / Elizabeth 'Skates' Hawkes
Sibel Ergener
Guest Star
Ed Blatchford
Sturgis Turner
Scott Lawrence
Guest Star
James Karen
Guest Star
John Getz
Guest Star
Judd Trichter
Lt. Andrew 'X-Man' Buxton
Lochlyn Munro
Guest Star
Vaughn Armstrong
Guest Star
Brent Huff
Bobbi Latham
Anne-Marie Johnson
Guest Star
Yolanda King
Guest Star
Kristen Dalton
Guest Star
Joanna Canton
Guest Star
Mike Genovese
Guest Star
Alexandra Bokyun Chun
Guest Star
Nick Tate
Guest Star
Tom Wright
Guest Star
Dylan Neal
Guest Star
Trevor Goddard
Guest Star
John Diehl
Guest Star
Frank John Hughes
Guest Star
Dennis Cockrum
Lt. Alfred Aldridge
A.J. Tannen
Guest Star
Brian Gross
Guest Star
Mario Schugel
Guest Star
Art Chudabala
Guest Star
Darrel Casalino
Guest Star
Adam Gregor
Guest Star
Scott Valentine
Guest Star
Andrew J. Robinson
Rene Peterson
Cindy Ambuehl
Victor 'Gunny' Galindez
Randy Vasquez
Guest Star
Matt Winston
Guest Star
Will Schaub
Guest Star
Steve Valentine
Guest Star
Ron Yuan
Guest Star
Martin Jacobs
Guest Star
Daniel Zacapa
Guest Star
Sean Christopher Davis
Cmdr. Amy Helfman
Jennifer Savidge
Guest Star
Steve Matteucci
Guest Star
James McBride
Guest Star
Julie White
Guest Star
John Prosky
SecNav Alexander Nelson / Alexander Nelson / John C. Spencer
Paul Collins
Guest Star
Corbin Bernsen
Guest Star
Benjamin Brown
Loren Singer / Meghan O'Hara
Nanci Chambers
Guest Star
Jim Wise
Guest Star
Edward Edwards
Guest Star
Bryan Rasmussen
Guest Star
Brian Kimmet
Guest Star
Chad Halyard
Guest Star
Vernon Wells
Sidney Walden
Cynthia Sikes
Stiles Morris
Harrison Page
Guest Star
Maury Sterling
Meg Austin
Tracey Needham
Guest Star
Anthony Holiday
Guest Star
Francois Chau
Guest Star
Kimberly Campbell
Guest Star
Jasmin Paul
Guest Star
John Castellanos
Guest Star
Brixton Karnes
Guest Star
AlexSandra Wright
Guest Star
Bruce Jarchow
Guest Star
Troy Ruptash
Guest Star
Drew Pillsbury
Guest Star
Michael Yama
Guest Star
Terrance Camilleri
Guest Star
Steven Baron
Guest Star
Frances Marshall
Guest Star
Michael Ryan Way
Guest Star
Sondra Currie
Guest Star
James Pickens Jr.
Guest Star
Kent McCord
Guest Star
Phill Lewis
Captain Weston
Beau Baxter
Guest Star
John Colella
Guest Star
Mark Costello
Guest Star
Doris Hess
Guest Star
Jack Brewer
Guest Star
Terri R. Smith
Guest Star
Dean Hill
Guest Star
Jesus Garcia Giménez
Guest Star
Christian Leffler
Alan Mattoni / Lt. Cmdr. Alan Mattoni
Rif Hutton
Guest Star
David Barrera
Guest Star
James Wellington
Guest Star
Reamy Hall
Guest Star
George Palermo
Guest Star
Tom Jay Jones
Guest Star
Kurt Cacerres
Guest Star
Donald McDonald
Guest Star
Gwen Humble
Guest Star
Cindy Lu
Guest Star
Frayne Rosanoff
Guest Star
Al Rodrigo
Guest Star
David A. Kimball
Guest Star
Annie Gagen
Guest Star
Polly LePorte
Guest Star
Catherine Butterfield
Guest Star
Christopher Davis
Guest Star
Larry Michael Woods
Guest Star
Monique Wright
Guest Star
Jennifer Hammon
Guest Star
Tim Lounibos
Guest Star
John Connolly
Guest Star
Christian Payne
Guest Star
Mark Galasso
Guest Star
Matt Corboy
Guest Star
Ivelka Reyes
Guest Star
Kendahl King
Guest Star
Maggie Baird
Guest Star
Jorge E. Cordova
Guest Star
Robert Neary
Guest Star
Stephen Ramsey
Guest Star
Kari Coleman
Guest Star
Jack Shearer
Mattie Grace Johnson
Hallee Hirsh
Guest Star
Ashley Tucker
Guest Star
Chad Brannon
Guest Star
Tegan West
Guest Star
Michele Dalcin
Guest Star
Tanya Koeberl
Guest Star
Brian Vickers
Guest Star
Drew Ebersole
Guest Star
Josh Carmichael
Guest Star
Kent Faulcon
Guest Star
Ransford Doherty
Guest Star
Jennifer Driver
Guest Star
Steve M. Gagnon
Guest Star
Peter Konerko
Guest Star
Sandy Luo
Adm. Arkady Yakushkin
Adam Gregor
Senator Edward Sheffield
Dean Stockwell
Guest Star
Rob Moran
Guest Star
Steve Monroe
Guest Star
Robert Joseph
Guest Star
Gretchen Morgan
Guest Star
J. Patrick Lawlor
Guest Star
Rikke Roenholt
Stuart Dunston
John D'Aquino
Guest Star
Daniel Kountz
Guest Star
Shaw Jones
Guest Star
Elijha Mahar
Guest Star
Terence Winter
Guest Star
Donald Willis
Admiral Thomas Boone / Thomas Boone
Terry O'Quinn
Guest Star
Michael Gallagher
Ted Lindsey / Cmdr. Ted Lindsey / Captain Stewart
W.K. Stratton
Big Bud Roberts
Jeff MacKay
Guest Star
Christopher Coronado
Carolyn Imes
Dana Sparks
Guest Star
Michael Ming
Clifford Blakely
John DeMita
Alison Krennick
Andrea Thompson
Jordan Parker
Susan Haskell
Lt. Gregory Vukovic
Chris Beetem
Dalton Lowne
Larry Poindexter
Cahill / First Sergeant Creed / Seal Instructor
Matt Sigloch
Clark Palmer
Peter Murnik
Mark 'Falcon' Sokol / Submarine Skipper
Rex Linn
Ned Bannon / Capt. French
Glenn Morshower
Danny Walden / Terry Guitry
Sean Murray
Teresa Coulter / Lt. Cmdr. Teresa Coulter
Trisha Yearwood
Kate Pike / Cmdr. Caitlin 'Kate' Pike
Andrea Parker
Tom Hart / Captain Trecher / Jeb Stuart Wilkins
Guy Garner
Ross
Bill Bolender
Annie Pendry
Daphne Ashbrook
Meredith Cavanaugh / Maryann Cavendish
Isabella Hofmann
Admiral Drake
John Roselius
Chief of Chaplains / Chaplain
Scott Haven