| Name | Age at time of killing(s) | Date of killing(s) | Country | Location | Killed | Injured | Note(s) and citation(s) |
|---|
| Carl Newton Mahan | 6 years, 7 months, 26 days[1] | May 18, 1929 | United States | Paintsville, Kentucky | 1 | 0 | Mahan shot eight-year-old Cecil Van Hoose.[2] He was sentenced to 15 years in a reformatory, but his sentence was later overturned.[3] |
| Unnamed boy | 6 years | February 29, 2000 | United States | Mount Morris Township, Michigan | 1 | 0 | He shot his six-year-old classmate, Kayla Rolland, at Buell Elementary School.
His uncle, the gun owner, was charged with involuntary manslaughter. |
| Lizzie Cook | 6 years | February 27, 1899 | United States | Birmingham, Alabama | 1 | 0 | Cook intentionally set her two-year-old brother's clothes on fire while she was babysitting.
The fire burned through the fabric and he died.[4] |
| Unnamed boy | 6 years | June 2, 1910 | Norway | O
|