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

Director

Jeannot Szwarc

Director

Ian Toynton

Director

Bradford May

Director

Terrence O'Hara

Director

Donald P. Bellisario

Director

Kenneth Johnson

Director

Jeannot Szwarc

Director

Tony Wharmby

Director

Ray Austin

Director

Alan Levi

Director

Greg Beeman