Dexter

* Norberto Cervantes - Stabbed 11 times with a shiv by a prison guard assassin on Carlos Guerrero's orders
* Matt Chambers - Stabbed by Dexter with a knife
* Nurse Mary - Stabbed three times by Dexter. Set in flashback
* Jorge Castillo - Stabbed by Dexter with a knife
* Valerie Castillo - Carotid artery severed by Dexter
* Alex Timmons - Killed offscreen by Dexter. Set in flashback
* Gene Marshall - Killed offscreen by Dexter. Set in flashback
* Cindy Landon - Killed offscreen by Dexter. Set in flashback
* Jeremy Downs - Slashed his own neck
* Doctor Emmett Meridian - Neck slashed by Dexter with a surgical handsaw
* Jacques Bayard - Shot in the head offscreen by Doakes
* **Brian Moser / The Ice Truck Killer** - Throat slit by Dexter

### Season 2

* Paul Bennett - Head bludgeoned offscreen by an inmate
* Rick Jensen - Killed offscreen by Dexter
* Little Chino - Stabbed by Dexter with a machete
* Roger Hicks - Stabbed by Dexter with a knife
* Curtis Barnes - Shot by Doakes
* Ken Olson - Decapitated by Dexter with a meat cleaver
* Santos Jimenez - Decapitated by Dexter with a chainsaw
* Carl - Executed by the state of Florida via electric chair. Set in flashback
* Christopher Harlow - Decapitated and dismembered by Dexter with a surgical handsaw
* Estaban Famosa - Neck snapped by Dexter
* Teo Famosa - Shot by Dexter
* **Lila West** - Stabbed in the heart by Dexter with a knife

### Season 3

* Oscar Prado - Stabbed by Dexter with a bayonet
* Cal Rooney - Decapitated by Dexter with a meat cleaver. Set in flashback
* Freebo - Stabbed in the neck by Dexter with a bayonet
* Javier Garza - Strangled by George King
* Nathan Marten - Garrotted by Dexter
* Ethan Turner - Stabbed by Dexter with a knife
* Clemson Galt - Stabbed by Dexter with a knife
* Billy Fleeter - Stabbed by Miguel with a knife
* **Miguel Prado** - Garrotted by Dexter
* **George King / The Skinner** - Neck snapped by Dexter

### Season 4

* Benny Gomez - Stabbed by Dexter with a knife
* Zoey Kruger - Stabbed by Dexter with a knife
* Johnny Rose - Shot three times by Nikki Wald
* Jonathan Farrow - Decapitated by Dexter with a cleaver
* Stan Beaudry - Neck slashed by Dexter with a reciprocating saw
* Christine Hill - Shot herself in the head
* **Arthur Mitchell / The Trinity Killer** - Stabbed in the head offscreen by Dexter with a hammer's claw

### Season 5

* Rankin - Bludgeoned by Dexter with an anchor. (More of a jerk than outright evil)
* Boyd Fowler - Stabbed by Dexter with a knife
* Doctor Dan Mendell - Neck snapped by Dexter
* Lance Robinson - Strangled by Dexter with a plastic sheet
* Carlos Fuentes - Shot in the head by Debra
* Cole Harmon - Stabbed by Dexter with a knife
* Alex Tilden - Stabbed by Lumen with a knife
* Stan Liddy - Stabbed by Dexter with a knife
* **Jordan Chase** - Stabbed by Lumen with a knife

### Season 6

* Ben and Roger - Electrocuted by Dexter with defibrillators
* Joe Walker - Stabbed by Dexter with a knife
* Julio Benes - Throat slashed by Dexter with a straight razor
* Walter Kenney - Smothered by Dexter with a pillow
* Leo Hernandez - Shot by Mike Anderson and the MMPD
* Nick - Drowned in the ocean by Dexter
* Sally Mitchell - Bludgeoned by Jonah with a hockey stick, offscreen
* Norm - Stabbed by Dexter with a pitchfork
* Steve Dorsey - Stabbed by Dexter with a knife
* Beth Dorsey - Triggered poison gas canisters in her backpack; was forced into an interrogation room by Dexter so she was its only victim
* Alberto - Impaled by Dexter with a harpoon
* **Travis Marshall / The Doomsday Killer** - Stabbed by Dexter with a knife

### Season 7

* Viktor Baskov - Bludgeoned by Dexter with a fire extinguisher
* Wayne Randall - Jumped in front of a speeding truck
* Louis Greene - Shot in the head by Isaak. (More shady than outright evil)
* Ray Speltzer - Staked by Dexter
* Andres Rodriguez - Head stomped on by Isaak
* Sal Price - Poisoned by Hannah putting poison on his pen which he chews. (More shady than outright evil)
* Hitman - Throat slit by Dexter with a knife
* Oleg Mickic - Stabbed in the back by Dexter with a knife
* Benjamin Caffrey - Shot five times by Isaak
* Jurg Yeliashkevych - Bludgeoned by Hannah with a lamp
* **Isaak Sirko** - Shot by George Novikov and died of blood loss
* George Novikov - Shot by Joseph Quinn
* Clint McKay - Stabbed by Dexter with a knife
* Hael Baker - Poisoned offscreen by Hannah with aconite.
* Hector Estrada - Stabbed by Dexter with a knife
* **Maria LaGuerta** - Shot by Debra

### Season 8

* Andrew Briggs - Stabbed by Dexter with a knife
* Javier Guzman - Shot three times in the check and once in the head by Debra. Set in flashback
* Ron Galuzzo - Stabbed offscreen by Dexter with a knife
* AJ Yates - Impaled from behind by Dexter with a curtain pole
* Miles Castner - Stabbed in the throat by Hannah with a piece of glass
* Shawn Decker - Bludgeoned by Zach
* Zach Hamilton - Back of his head cut open by Oliver Saxon with a bone saw
* **Oliver Saxon / The Brain Surgeon** - Stabbed in the neck by Dexter with a pen