Delphine Claudia Nicot, 43, went to Chalong Police Station on Friday to report that she had been the victim of a grab-and-ride thief on a motorcycle.
According to the Frenchwoman, the man snatched her shoulder bag as she walked near Nai Harn beach about 4pm.
The man wore shorts, a helmet and a black t-shirt and rode off towards Rawai, she said.
She asked police to list the items stolen: a camera valued at 15,000 baht, 2000 baht in cash and 2000 euros.
Police immediately went to work on the case, checking security camera footage from around the time that Ms Nicot said the crime was committed.
They found nothing to substantiate her story and called her back in later the same day.
When police told her that they could find no evidence of the theft she described taking place and told her they believed she had made up the tale, she confessed.
She said she had lost her camera and under the terms of the warranty, it would be replaced if she could prove it had been stolen.
Ms Nicot now faces fraud charges and an extended holiday.