WACO-FM
| Broadcast area | Waco, Killeen, and Temple, Texas | 
|---|---|
| Frequency | 99.9 MHz | 
| Branding | WACO 100 | 
| Programming | |
| Format | Country | 
| Affiliations | Premiere Networks | 
| Ownership | |
| Owner | 
 | 
| KBGO, KBRQ, KIIZ-FM, KLFX, KWTX, KWTX-FM | |
| History | |
| First air date | June 1960 | 
| Call sign meaning | Waco | 
| Technical information | |
| Licensing authority | FCC | 
| Facility ID | 59264 | 
| Class | C | 
| ERP | 90,000 watts | 
| HAAT | 506 meters (1,660 ft) | 
| Links | |
| Public license information  | |
| Webcast | Listen Live | 
| Website | waco100.iheart.com | 
WACO-FM (99.9 MHz, "WACO 100") is a commercial radio station in Waco, Texas. It airs a country music radio format and is owned by iHeartMedia, Inc. The studios and offices are located on West Highway 6 in Southwest Waco. The transmitter is off Tower Drive in McLennan County in the community of Moody, amid towers for other local FM and TV stations.
WACO-FM has an effective radiated power (ERP) of 90,000 watts, broadcasting from a tower 1,660 feet (505.968 m) in height above average terrain (HAAT). The station brands itself as "WACO 100, a station so big they named the entire city after it." The station can be heard from Dallas/Ft. Worth to Austin.