| Person | Type | Job | Role(s) | Episodes |
|---|---|---|---|---|
 Brad Markowitz | Crew | Production | Producer | 66 |
Charles Correll | Crew | Directing | Director | 4 |
 Charlie Picerni | Crew | Directing | Director | 1 |
Christopher Crowe | Crew | Production | Producer | 66 |
 Jeannot Szwarc | Crew | Directing | Director | 1 |
 Kenneth Johnson | Crew | Directing | Director | 4 |
 Nick Searcy | Crew | Writing | Story | 1 |
 Adrian Holmes | Cast | Actor | 1 | |
 Aki Aleong | Cast | Actor | 1 | |
 Alan Scarfe | Cast | Actor | Dr. Bradley Talmadge | 66 |
 Alastair Duncan | Cast | Actor | 1 | |
Alexandra Hedison | Cast | Actress | 1 | |
 Anthony Harrison | Cast | Actor | Ramsey & Nicholas Double | 1 |
 Ben Murphy | Cast | Actor | 1 | |
 Blu Mankuma | Cast | Actor | 1 | |
 Bobby Edner | Cast | Actor | 1 | |
 Brent Stait | Cast | Actor | 1 | |
 Brian Thompson | Cast | Actor | 2 | |
 Cary-Hiroyuki Tagawa | Cast | Actor | 1 | |
 Charley Lang | Cast | Actor | MIB #1 | 1 |
 Chelsea Hobbs | Cast | Actress | 1 | |
 Chris Kramer | Cast | Actor | 1 | |
 Dale Dye | Cast | Actor | 1 | |
 Daniel Bacon | Cast | Actor | Ken | 1 |
 Devin Douglas Drewitz | Cast | Actor | 1 | |
 Don Franklin | Cast | Actor | Craig Donovan | 66 |
 Eddie Velez | Cast | Actor | 1 | |
 Francis Guinan | Cast | Actor | 1 | |
 Garret Dillahunt | Cast | Actor | 1 | |
 Garwin Sanford | Cast | Actor | 3 | |
 Gina Philips | Cast | Actress | 1 | |
 Hiro Kanagawa | Cast | Actor | 1 | |
 Holmes Osborne | Cast | Actor | 2 | |
 Aurelian Smith Jr. | Cast | Actor | 1 | |
 James Kirk | Cast | Actor | Young Maxwell | 1 |
 James Morrison | Cast | Actor | 1 | |
 Jeff Kober | Cast | Actor | 1 | |
 Jeffrey Hutchinson | Cast | Actor | Crew Member | 1 |
 Jenny-Lynn Hutcheson | Cast | Actress | 1 | |
Jerome Butler | Cast | Actor | MIB #2 | 1 |
 Jessalyn Gilsig | Cast | Actress | 1 | |
 Jewel Staite | Cast | Actress | Molly - Psychic | 1 |
 Jim Antonio | Cast | Actor | Admiral Robert A. Newman | 1 |
 John Allen Nelson | Cast | Actor | 1 | |
 John Posey | Cast | Actor | Marshall / Plant Manager | 1 |
 Jonathan LaPaglia | Cast | Actor | Frank Parker | 66 |
 Jordan Lund | Cast | Actor | 1 | |
 Kevin Patrick Walls | Cast | Actor | Lt. LaSalle | 1 |
Lauren Woodland | Cast | Actress | 1 | |
 Lawrence Monoson | Cast | Actor | 1 | |
 Lillian Lehman | Cast | Actress | 1 | |
 Lindze Letherman | Cast | Actress | 1 | |
 Mackenzie Gray | Cast | Actor | 1 | |
 Malcolm Stewart | Cast | Actor | 1 | |
 Marc Vann | Cast | Actor | 1 | |
 Mark Acheson | Cast | Actor | 1 | |
 Mark Holden | Cast | Actor | 2 | |
 Michael Bailey Smith | Cast | Actor | Brenneman | 2 |
 Michael Forest | Cast | Actor | General Lagerfield | 1 |
 Michael Harris | Cast | Actor | 1 | |
 Michael McShane | Cast | Actor | 1 | |
 Mike Dopud | Cast | Actor | 1 | |
 Mitchell Kosterman | Cast | Actor | 1 | |
 Nancy Sullivan | Cast | Actress | 1 | |
 Natassia Malthe | Cast | Actress | 1 | |
 Nell Carter | Cast | Actress | 1 | |
Nick Searcy | Cast | Actor | Nathan Ramsey | 66 |
 Norman Lloyd | Cast | Actor | Dr. Isaac Mentnor | 66 |
 Phil Morris | Cast | Actor | 1 | |
 Phillip Mitchell | Cast | Actor | 1 | |
 Rick Worthy | Cast | Actor | 1 | |
 Robert Harper | Cast | Actor | 1 | |
 Robert Knepper | Cast | Actor | 1 | |
 Robert Picardo | Cast | Actor | 1 | |
 Rodney Rowland | Cast | Actor | 1 | |
 Roxann Dawson | Cast | Actress | Cdr. Helen Keagle | 1 |
 Sam Vincent | Cast | Actor | 1 | |
 Sam Whipple | Cast | Actor | Dr. John Ballard | 44 |
 Scarlett Pomers | Cast | Actress | 1 | |
 Stacie Mistysyn | Cast | Actress | 1 | |
 Stefan Arngrim | Cast | Actor | 1 | |
 Stephanie Romanov | Cast | Actress | 2 | |
 Tamlyn Tomita | Cast | Actress | 1 | |
 Tanja Reichert | Cast | Actress | 1 | |
 Thomas Kopache | Cast | Actor | 1 | |
 Todd Kimsey | Cast | Actor | Lt. Willis | 1 |
 Tom Amandes | Cast | Actor | 1 | |
 Tucker Smallwood | Cast | Actor | 1 | |
 Vanessa Dorman | Cast | Sarah Mitchell | 1 | |
 Venus Terzo | Cast | Actress | 1 | |
 Yvonne Zima | Cast | Actress | 1 | |
 Cazimir Milostan | Cast | Actor | NNL Aide | 1 |
 Erin Karpluk | Cast | Actress | 1 | |
 Jessica Lucas | Cast | Actress | 1 | |
 Robin Leach | Cast | Actor | 1 | |
 Katherine Cannon | Cast | Actress | 2 | |
 Michelle Goh | Cast | Actress | 1 | |
 Arnie Walters | Cast | Actor | 1 | |
 Justina Vail Evans | Cast | Actress | Dr. Olga Vukavitch | 66 |
| Person | Type | Job | Role(s) | Episodes |
