- March 2 – 26-year-old Rodolfo Cardenas is stabbed and mortally wounded in the Audubon Estates trailer park in Hybla Valley by George Lagunas and Elvis K. Amaya. The heavily-intoxicated Cardenas, not realizing the seriousness of his injuries, goes home and falls asleep on a couch, where he bleeds to death.
- March 11 – 60-year-old Richard Peterson and his 21-year-old disabled daughter Sophia die in a fire caused by a prayer candle in their double-wide at 14530 Lanica Circle in the Meadows of Chantilly trailer park in Chantilly.
- March 28 – 53-year-old Phuoc Huu Le is killed in Falls Church when a branch of the oak tree he was trimming snaps back and strikes him.
- Glod, Maria. "Virginia Briefing." The Washington Post: C.6. National Newspapers Core. Mar 04 2007. Web. 22 Oct. 2011.
- Moore, Ken. "Second Teen to Serve Three Years." Mount Vernon Gazette. Connection Newspapers, 28 May 2008.
- Schulte, Brigid. "Devastating Fire Deals Chantilly Family another Blow." The Washington PostMar 19 2007. ProQuest. Web. 4 Feb. 2017.
- "Father, Daughter Die in Fire." Connection Newspapers. Connection Newspapers, 14 Mar. 2007. Web. 04 Feb. 2017.
- Jackman, Tom. "Man Killed While Trimming Tree." The Washington Post. The Washington Post, 30 Mar. 2007. Web. 30 Sept. 2011.
|Fairfax County by Year: 2007|
|February 2007||·||March||·||April 2007|