Officers arrived at Scribner Street near E 6th Street just after 11 p.m.
One of the victims, found inside a home, was said to have non-life-threatening injuries. The other, found inside a car outside, was pronounced dead at the scene.
Police did not release any suspect or motive information, but said that area is known for gang activity. More officers will be in that neighborhood with the goal of preventing retaliatory shootings.
Anyone with information about the shooting is urged to contact the Stockton Police Department at (209) 937-8377, or Crime Stoppers at (209) 946-0600.