CKEX-FM (100.7 MHz) is a radio station in Red Deer, Alberta. Owned by Harvard Media, it broadcasts a modern rock format branded as X 100.7.

CKRI-FM received approval by the CRTC on October 17, 2008, along with other new applications to serve Red Deer.

CKRI launched on August 6, 2010 as 100.7 The River, with an adult contemporary format. In August 2014, the station flipped to adult hits as 100.7 Cruz FM, which was modelled after its Edmonton sister station CKEA-FM. In January 2018, the station flipped to modern rock as X100.7, which is modelled after Calgary sister station CFEX-FM. The station changed its call letters to CKEX-FM.

• X 100.7
• CKEX-FM at The History of Canadian Broadcasting by the Canadian Communications Foundation
• CKEX-FM in the REC Canadian station database