WJLA 24/7 News is an American regional cable news television channel in Washington, D.C., operated by ABC-affiliated station WJLA-TV (channel 7) owned by the Sinclair Broadcast Group. The channel provides 24-hour news coverage primarily focused on Washington, northern Virginia, and suburban areas of Maryland within the Washington metropolitan area. The channel shares studio facilities and offices with WJLA-TV and the Rosslyn-based Circa News in Arlington, Virginia. WJLA 24/7 News reaches more than 1.2 million cable television households within the D.C metropolitan area.

The channel was launched on October 7, 1991, as NewsChannel 8. The "8" branding was selected as a part of the name to attempt to get Washington-area cable providers to place the channel between its parent ABC-affiliated station, WJLA-TV (at channel 7), and local CBS affiliate WUSA-TV on channel 9. Allbritton also bundled the channel along with WJLA in carriage contracts. In 1995, the channel began airing timeshifted ABC News programs hours or days after their original broadcast.

NewsChannel 8 initially only had ad revenue stream until federal regulations required cable operators to pay for its carriage. In 1997, the channel was reported as profitable and started a streak of profitability by Allbritton.

As NewsChannel 8's carriage expanded to those areas, coverage was expanded to include Southern Maryland and Prince William County governmental meetings by the end of the 1990s. In July 2001, NewsChannel 8 beat CNN, Headline News, MSNBC and CNBC in the ratings, the highest viewership that the channel had ever accrued in its first 10 years. In August 2001, Comcast agreed to carry the channel for another 10 years. In August 2002, Allbritton Communications merged NewsChannel 8 and WJLA-TV with NewsChannel 8 laying off 30 of its 125 staff. The channel in Springfield and station in Northwest Washington moved to a Rosslyn section twin towers office complex in Arlington, Gannett Co. and USA Today's former home.

On September 5, 2006, Comcast moved NewsChannel 8, at the channel's request, to channel 28 on the analog tiers of some of its systems, placing it next to sister station WJLA-TV on channel 27 (Comcast's systems in the immediate Washington, D.C., area slot the market's broadcast stations in the 20-29 channel range; this is an artifact from when television stations broadcast in analog prior to the 2009 digital television transition in order to avert co-channel interference with the broadcast signals).

Systems outside of Washington proper carry it on channel 8, next to WJLA on channel 7. In all cases, however, the channel's high definition feed is carried on digital channel 808. On July 17, 2013, satellite provider DirecTV began carrying NewsChannel 8 on channel 8 within the Washington market. On December 21, 2015, the channel was added to satellite provider Dish Network's D.C.-area broadcast lineup, also on channel 8.

On August 9, 2010, the channel was rebranded as TBD TV, in order to associate it with the recently established news website TBD.com, which provided news content for both the channel and WJLA. Allbritton subsequently reverted its news channel's branding to the original NewsChannel 8 name in February 2011.

On July 29, 2013, Allbritton Communications announced that it would sell its entire television group, including NewsChannel 8 and WJLA-TV, to Hunt Valley-based Sinclair Broadcast Group (owners of flagship station WBFF, as well as operators of two other stations in the adjacent Baltimore market). Sinclair had indicated that it may use NewsChannel 8 as a base to launch a national cable news channel.