Portageville is a hamlet located in the town of Genesee Falls in Wyoming County, New York, United States. Its name derives from the Native American canoeists who would withdraw their craft from the river to avoid going over three waterfalls in the Genesee River gorge now known as Portage Falls. They had to portage several miles to the site of present-day Mount Morris, where they could embark for the rest of the journey downriver.