It happened on the 6600 block of Martins Mill Road around 12:30 a.m.
Police say two female family members were involved in a physical fight, a knife was pulled and one of the women fired several shots, striking a 37-year-old man.
Police rushed the man to the hospital in critical condition.
The shooter and a woman who witnessed the shooting were also injured.
They're both in stable condition.
Investigators say the shooter is cooperating with police.