Metropolitan Nashville Police responded to the shooting just after 8:30 p.m. on Cannon Street, near the JC Napier Homes.
Investigators said four men in a 4-door silver car pulled up and fired several shots.
The woman and boy were grazed by bullets, and taken to the hospital. Their injuries were not considered life-threatening. Their identities were not immediately released.
Anyone with information was asked to call Crime Stoppers at (615)74-CRIME.