- December 18 – 18-year-old Lake Braddock Secondary School student Laween A. Akrawi unintentionally kills himself while driving on the Franconia-Springfield Parkway in Springfield when he loses control of the BMW 3-Series he is driving and crashes into the trees alongside the roadway.
- December 21 – 73-year-old Jae Hyun Cho fatally electrocutes 56-year-old Kum Yeon, then attempts to kill himself by the same method in his basement apartment at 7160 Pennys Town Court in Annandale. Cho is taken to the hospital with life-threatening injuries, and dies on January 9, 2016.
- December 25 – 34-year-old Santos Narcisco Osorio fatally stabs 23-year-old Edgar Armando Serrano in Falls Church to settle an argument at a party.
- Barton, Mary Ann. "Fairfax Station Teen Dies in Fatal Crash in Springfield Area: Police." Fairfax Station, VA Patch. Patch.com, 19 Dec. 2015. Web. 02 June 2016.
- Nirappil, Fenit. "Va. Teen Who Loved Cars and Dreamed of Medical School Is Killed in Crash." Washington Post. The Washington Post, 19 Dec. 2015. Web. 02 June 2016.
- FCPD Public Affairs Bureau. "Homicide Investigation in Annandale." Fairfax County Police Department News. Fairfax County Police Department, 22 Dec. 2015. Web. 15 Feb. 2016.
- Ashford, Ellie. "New Details Emerge on Annandale Electrocution Homicide." Annandale VA Blog. Ellie Ashford, 5 Jan. 2016. Web. 15 Feb. 2016.
- FCPD Public Affairs Bureau. "UPDATE - Annandale Homicide." Fairfax County Police Department News. Fairfax County Police Department, 14 Jan. 2016. Web. 15 Feb. 2016.
- Hambrick, Greg. "Christmas Day Homicide: Suspect in Custody." Falls Church, VA Patch. Patch.com, 25 Dec. 2015. Web. 14 Aug. 2016.
- "Argument Over Tattoo Sparked Christmas Killing in Va.: Police." NBC4 Washington. NBCUniversal Media, 28 Dec. 2015. Web. 14 Aug. 2016.
|Fairfax County by Year: 2015|
|November 2015||·||December||·||January 2016|