| City | Idaho Falls, Idaho |
|---|---|
| Broadcast area | Idaho Falls - Pocatello - Rexburg |
| Branding | Z103 |
| Slogan | Idaho's #1 Hit Music Channel |
| Frequency | 103.3 MHz |
| First air date | 1986 |
| Format | Top 40/CHR |
| ERP | 100,000 watts |
| HAAT | 201 meters |
| Class | C1 |
| Facility ID | 18116 |
| Owner | Riverbend Communications |
| Sister stations | KLCE, KCVI, KTHK, KEII |
| Webcast | Listen Live |
| Website | z103.fm |
KFTZ (103.3 MHz, "Z103") is a Mainstream Top 40 radio station located in Idaho Falls, Idaho. The station is branded as "Z103". It is licensed, owned and operated by Riverbend Communications.
On-Air staff: Brad Collins, Tara, KB, Matty Merrill, Jakoby Winters. Former On-Air staff: Mike Nelson, Randy Izzy, Brody Scott.
Coordinates: 43°21′07″N 112°00′25″W / 43.352°N 112.007°W