Here's the complete list of Gibbs' Rules to date.

The Complete List of Gibbs' Rules: 1–25

Rule #1: "Never let suspects stay together." Gibbs Alternate Rule #1: "Never screw over your partner." (No one is sure why the writers had two #1 rules. However, they probably weren't keeping track at the time. In NCIS Season 8, Episode 11, "Ships in the Night," Magee acknowledges that there were two #1 rules when Gibbs decides to break rule #1.)

Rule #2: "Always wear gloves at a crime scene."

Rule #3: "Don't believe what you are told; double-check." Alternate Rule #3: "Never be unreachable."

Rule #4: "The best way to keep a secret, keep it to yourself." Corollary 1 to Rule #4: "The 2nd best way to keep a secret, tell one other person, if you must." Corollary 2 to Rule #4: "There is no third best."

Rule #5: "You don't waste good." (Season 8, Episode 22)

Rule #6: "Never say you're sorry."

Rule #7: "Always be specific when you lie."

Rule #8: "Never take anything for granted."

Rule #9: "Never go anywhere without a knife." (Season 8, Episode 9)

Rule #10: "Never get personally involved in a case." (Jethro burned this rule in Season 16, Episode 13)

Rule #11: "When the job is done, walk away."

Rule #12: "Never date a co-worker."

Rule #13: "Never ever involve lawyers." (It is also mentioned that there are seven rules that involve lawyers. Currently, this is the only rule about lawyers that has been revealed.)

Rule #14: "Bend the line, don't break it." (Season 11, Episode 3)

Rule #15: "Always work as a team." (Season 5, Episode 5)

Rule #16: "If someone thinks they have the upper hand, break it." (Season Finale, Season 8)

Rule #17: Hasn't been revealed

Rule #18: "It's better to seek forgiveness than ask permission." (Season 3, Episode 4, revealed by Director Shephard)

Rule #19: Hasn't been revealed

Rule #20: "Always look under." (Season 12, Episode 17, revealed by Special Agent Barrett. Mentioned again in Season 17, Episode 16 by Special Agent Bishop.)

Rule #21: Hasn't been revealed

Rule #22: "Never ever bother Gibbs in interrogation."

Rule #23: "Never mess with a marine's coffee if you want to live."

Rule #24: Hasn't been revealed

Rule #25: Hasn't been revealed

Rules 26–50

Rule #26: Hasn't been revealed

Rule #27: "Two ways to follow: First way they never notice you, the second way, they ONLY notice you."

Rule #28: "When you need help, ask." (Season 9)

Rule #29: "Learn to Obey before you Command." (Season 1, Episode 2 of NCIS: Origins)

Rule #30: Hasn't been revealed

Rule #31: Hasn't been revealed

Rule #32: Hasn't been revealed

Rule #33: Hasn't been revealed

Rule #34: Hasn't been revealed

Rule #35: "Always watch the watchers." (Season 8, Episode 21 and Season 17, Episode 17)

Rule #36: "If you feel like you're being played, you probably are." (Season 9, Episode 1)

Rule #37: Hasn't been revealed

Rule #38: "Your case, your lead" (First said to Tony Dinozzo by Gibbs in Season 6, Episode 16, and in Season 10, Episode 3, Gibbs said it again to Dr. Mallard)

Rule #39: "There is no such thing as coincidences." Rule #39A: "There is no such thing as a small world." (Season 10, Episode 14)

Rule #40: "If it seems like someone is out to get you, they are."

Rule #41: Hasn't been revealed

Rule #42: "Never accept an apology from someone who has just sucker punched you." (Revealed during Season 9 on Feb. 21st)

Rule #43: Hasn't been revealed

Rule #44: "First things first, hide the women and children."

Rule #45: "Clean up your own messes."

Rule #46: Hasn't been revealed

Rule #47: Hasn't been revealed

Rule #48: Hasn't been revealed

Rule #49: Hasn't been revealed

Rule #50: Hasn't been revealed

Poster Comment:

I gave up on NCIS after too many episodes. Recently, I started watching NCIS Origin3.