It happened around 9:30 Sunday morning, at the 7-Eleven store near Shaw and Golden State Boulevard.
You can see the woman in these stills, taken from surveillance video.
Police describe her as a white woman, about 5’6″, 5’7″, around 160 pounds, but her most distinguishing feature is her bright red hair.
Police say she was in the store about 15 minutes.
Police say a gun was never seen on video, but the woman is seen lifting her shirt slightly, and the clerk claimed they saw a handgun.
The clerk gave the woman a few hundred dollars out of the register.
Police also don’t believe this 7-Eleven robbery and the last two in Fresno are connected in any way.
Police believe the woman took off in a white compact four-door sedan.
If you saw anything, contact the Fresno Police Department.