"Murder is contrary to the laws of man and God."
- - M5 Computer (TOS: "The Ultimate Computer")
Murder is the crime of unjustly killing a person with intent to do so. Assassination is a form of murder carried out against important figures for political or ideological purposes.
In 2366, Data asked that his kidnapper Kivas Fajo be arrested on charges of murder, as well as other charges, due to Fajo's killing of Varria. (TNG: "The Most Toys")
In 2369, Jadzia Dax was falsely accused of murder by the Klaestrons for killing General Ardelon Tandro. (DS9: "Dax")
Kira Nerys told Commander Sisko about the murders the Cardassians did at the Gallitep labor camp. First came the humilitation, the rape of mothers in front of their children, the husbands beaten until their wives couldn't recognize them and the old people who were buried alive because they couldn't work anymore. The end of all this was the murder. (DS9: "Duet")
Joran Belar, one of the Dax symbiont's former hosts, murdered the doctor who dropped him from the Trill Initiate Program. (DS9: "Equilibrium")
The Orion Syndicate was involved in many unsolved murders. (DS9: "Honor Among Thieves")
Murders
- Alfredo Pedillo Jose by Bobby Cabe
- Lee Kelso by Gary Mitchell
- Mathews by Ruk
- Rayburn by Ruk
- Thomas Leighton by Lenore Karidian
- Maab by Kras
- Kara by Redjac
- Karen Tracy by Redjac
- Sybo by Redjac
- Gav by Thelev
- Ro-Kel by Croden
- Aquino by Neela
- Dekora Assan by Retaya (suspected)
- Morica Bilby by Norvo Tigan
- Zim Brott by Chu'lak
- Joseph Carey by Verin
- Frank Darwin by Lon Suder
- William Hodges and Marla Finn by Walter Pierce
- Ibudan's clone by Ibudan
- Hector Ilario by Chu'lak
- Kee-Bhor by Hon-Tihl
- Aamin Marritza by Kainon
- Imutta by Vedek Porta
- Tolen Ren by a Banean doctor
- Vaatrik by Kira Nerys
- Greta Vanderweg by Chu'lak
- Varria by Kivas Fajo
- Vreenak by Garak
- Tuvix by Kathryn Janeway
- Several Nucleogenic lifeforms by Rudolph Ransom
- Natasha Yar by Armus
Alternate reality
- Richard Robau by Nero (2233)
- Amanda Grayson by Nero (2258)
- Christopher Pike by Khan Noonien Singh (2259)