Uxoricide

Uxoricide is the act of killing one's own wife. The term is Latin in origin, stemming from a combination of the Latin words Uxor (wife) and Cide (to cut/to kill).

On Criminal Minds
Uxoricidal killers featured on Criminal Minds.
 * Season Four
 * Norman Hill ("Normal")
 * Ian Coakley ("Roadkill")
 * Season Five
 * Will Summers ("Risky Business")
 * William O'Brien ("Public Enemy")
 * Season Six
 * Lee Mullens ("Remembrance of Things Past")
 * Drew Jacobs ("What Happens at Home")
 * Raymond Donovan ("The Thirteenth Step")
 * Season Thirteen
 * Gabriel Merza ("Blue Angel")

Real-World
Real-world Uxoricidal killers.
 * H.H. Holmes
 * Helmuth Schmidt
 * Andrew Kehoe
 * Raymond Fernandez and Martha Beck
 * Charles Whitman
 * Charlie Brandt
 * Ariel Castro
 * Jesse Anderson

Further Readings

 * Wikipedia's article