WNJX-TV
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| Channels | |
| Branding | 
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| Programming | |
| Affiliations | |
| Ownership | |
| Owner | 
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| Operator | DT4: Telemundo Station Group via TBA | 
| WAPA-TV, WTIN-TV, WKAQ, WKAQ-FM, WYEL | |
| History | |
| First air date | April 27, 1970 | 
| Former call signs | 
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| Former channel number(s) | 
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| Technical information | |
| Licensing authority | FCC | 
| Facility ID | 73336 | 
| ERP | |
| HAAT | 
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| Transmitter coordinates | 18°8′51.6″N 66°58′57.1″W / 18.147667°N 66.982528°W | 
| Links | |
| Public license information  | |
| Website | |
WNJX-TV (channel 4) is a Spanish-language independent television station in Mayagüez, Puerto Rico. It is a full-time satellite of San Juan–based WAPA-TV (channel 4), owned by WAPA Media Group. WNJX-TV's transmitter is located at Monte del Estado in Maricao, while its parent station maintains studios on Avenida Luis Vigoreaux in Guaynabo.
WNJX-TV's fourth digital subchannel operates as a full-time satellite of Telemundo owned-and-operated station WKAQ-TV (channel 2) under a time brokerage agreement with NBCUniversal's Telemundo Station Group. Branded on-air as Telemundo West, this subchannel is mapped to virtual channel 2.12 rather than 4.4. WNJX-DT4's parent station maintains studios on Roosevelt Avenue in San Juan.