- June 14 – A two-year-old boy drowns at the Pirate's Cove Waterpark at the Pohick Bay Regional Park in Lorton. He is resuscitated and taken to Inova Fairfax Hospital, where he dies four days later.
- "2-year-old Found at Bottom of Waterpark Pool in Lorton Dies." WTTG. WTTG, 19 June 2015. Web. 07 Jan. 2017.
|Fairfax County by Year: 2015|
|May 2015||·||June||·||July 2015|