Police say the incident happened around 9:30 p.m. on July 3, in the 4200 block of Redding Street.
MORE: Woman caught on video being kidnapped in Oakland comes forward, police say
They say the suspect hit the woman with a gun and forced her into a dark colored, four-door sedan. The suspect then drove westbound on Redding Street.
The victim is described as a white female, approximately 30 to 32 years old and about 130 pounds. Her height, hair color and eye color are unknown.
The suspect is described as a Black male, approximately 30 to 32 years old, about 5 feet, 10 inches tall and weighing 140 pounds. He was last seen wearing a black hooded sweatshirt and blue-and-white pants and was armed with a black Glock-style handgun.
Anyone with information is asked to contact the Oakland Police Department's Missing Persons Unit at (510) 238-3641 or call 911.