WOI-FM (90.1 FM) is a radio station licensed to Ames, Iowa, serving the greater Ames/Des Moines area.
Until the formation of Iowa Public Radio in 2004, WOI-FM was the flagship station for a mini-network of FM stations in central Iowa, including KWOI in Carroll and KTPR in Fort Dodge.
Shortly after midnight on September 10, 2012, IPR switched WOI-FM's format to the News and Studio One service.
For those without HD Radio, classical music continues to be heard in portions of central Iowa on five full-power stations that between them cover most of the region.
WOI-FM broadcasts two digital channels in the HD Radio (hybrid) format.