| The Niigata Television Network 21, Inc. | |
| Trading Name: | UXTV |
| Native Name: | 株式会社新潟テレビ二十一 |
| Romanized Name: | Kabushikigaisha Niigata Terebi Nijūichi |
| Type: | Kabushiki kaisha |
| Foundation: | March 8, 1983 |
| Key People: | Miki Hibara (President and CEO) |
| Location: | 2230-19 Rokunomachi, Shimo-Ogawame-dori, Chuo-ku |
| Hq Location City: | Niigata City, Niigata Prefecture |
| Hq Location Country: | Japan |
| Industry: | Television network |
| Owner: | TV Asahi Holdings Corporation (18.6%) The Asahi Shimbun (16.5%) |
| Subsid: | UX Vision Inc. |
| Footnotes: | Data from its Company Profile and Company History |
| Callsign: | JOUX-DTV |
| City: | Niigata |
| Location: | Niigata Prefecture, Japan |
| Branding: | ux |
| Digital: | 23 (UHF) |
| Virtual: | 5 |
| Owner: | The Niigata Television Network 21, Inc. |
| Affiliations: | All-Nippon News Network |
| Founded: | March 8, 1983 |
| Airdate: | October 1, 1983 |
| Former Callsigns: | JOUX-TV (1983–2011) |
| Former Channel Numbers: | 21 (UHF analog, 1983–2011) |
| Licensing Authority: | MIC |
is a TV station affiliated with All-Nippon News Network (ANN) in Niigata, Niigata Prefecture. It was established on March 8, 1983 and began broadcasting from October 1, 1983.
The station has been branded as ux since 2006, after the last two letters of the station's call sign. The station's current slogan is YOU&ME&UX.
Niigata Television Network 21 was established on March 7, 1983 and commenced transmissions on October 1, 1983. Prior to that, TV Asahi programming was seen on NST. NST was affiliated to FNN, NNN and ANN, before alleviating the station's network schedule with the launch of TNN (now TeNY), which took over the NNN affiliation in 1981 and NT21, which took over the ANN affiliation in 1983. By then, Niigata has four network stations.
Digital terrestrial transmissions commenced on August 1, 2006. To mark the occasion, NT21 was rebranded as ux. Aside from airing TV Asahi shows, the station also currently airs a few TV Tokyo shows, since the network does not have a station in most prefectures.