Police said he robbed a convenience store on Orange Avenue and markets on Broadway and Obispo Avenue between 10:30 p.m. Thursday and 9:30 a.m. Friday.
In each case, the suspect always pulled out a handgun, demanded cash and made his getaway on a bicycle.
Surveillance cameras captured footage of the suspect inside two of those three businesses.
The suspect is described as a white male in his 20s, between 5 feet 10 inches to 6 feet 3 inches tall with light brown or dirty blond hair and an athletic build.
If you have any information about these robberies, you're urged to contact the Long Beach Police Department.