KTVB (channel 7) is a television station in Boise, Idaho, United States, affiliated with NBC and owned by Tegna Inc. The station's studios are located on West Fairview Avenue (off I-184) in Boise, and its transmitter is located on Deer Point in unincorporated Boise County. It is rebroadcast by KTFT-LD (channel 7) in Twin Falls, a low-power semi-satellite that inserts local advertising for the Magic Valley area into KTVB's schedule. KTFT-LD maintains a local sales office on Nielsen Point Place in Twin Falls, while its transmitter is located on Flat Top Butte near Jerome, Idaho. The two stations are branded as the "KTVB Media Group".

Channel 7 is the oldest continuously operating station in Idaho. It debuted on July 12, 1953, as KIDO-TV, the state's second television station to begin operations and the first to be fully licensed. Though KFXD-TV (channel 6) in Nampa beat KIDO-TV to the air by a month, KIDO-TV was by far the more organized operation with network and local programming, neither of which KFXD-TV featured in its brief two-month tenure on air. It was owned by Georgia Davidson alongside Boise radio station KIDO and a primary affiliate of NBC, though it also held affiliations with other networks in its early history. Davidson sold off the radio station in 1958, and channel 7 changed its call sign to KTVB the next year. Davidson was for years the only woman at NBC affiliate meetings. By the 1970s, KTVB had emerged as the news ratings leader in Boise, a position it has not yielded since.

Davidson sold KTVB to King Broadcasting in 1979. The station continued to lead local news ratings in the market with long-tenured personalities. In 1986, KTVB established K38AS (now KTFT-LD), the first low-power NBC affiliate. KTVB has changed ownership in larger transactions three times since 1990: to the Providence Journal Company, Belo Corporation, and Gannett, whose broadcast division split off as Tegna in 2015.

Boise radio station KIDO, owned by Georgia Davidson, filed with the Federal Communications Commission (FCC) in March 1952 seeking to build a television station on the city's allotted channel 7. The application arrived in anticipation of the end of the FCC's multi-year freeze on TV station applications. The construction permit was granted on December 23, KIDO already had some equipment on hand; the month before, it conducted a closed-circuit demonstration of television at its AM transmitter site. On an elevation behind the city, construction began in February on the transmitter site. The station signed for affiliation with the CBS, NBC, and DuMont networks; KIDO radio had maintained NBC affiliation since 1937.

From studios on 700 Crestline Drive, KIDO-TV began broadcasting on July 12, 1953; Philo Farnsworth, a television pioneer, was one of the guests of honor at the dedication. It was the second television station to make its bow in Idaho. On June 18, KFXD-TV (channel 6) in Nampa put out Idaho's first television test pattern, initiating regular programming under special temporary authority 11 days later. KIDO-TV was effectively the first serious station to begin operations in the state. While KIDO-TV had studios and network affiliations, KFXD-TV had neither: it was reliant exclusively on old movies and operated with the bare minimum of personnel. It lasted less than two months before leaving the air. The lone missing national network, ABC, affiliated with KIDO-TV in December. This replaced CBS, which had moved to new station KBOI-TV (channel 2) the previous month.

National live programming became a reality beginning with the 1955 World Series after a microwave transmission link between Boise and Salt Lake City was set up by KIDO-TV and KBOI-TV. KIDO-TV's tower was relocated to Deer Point in 1956, which together with an increased effective radiated power extended the station's coverage to a further 80,000 people. Davidson agreed to sell KIDO radio to the Mesabi Western Corp. in November 1958; the radio station retained its call sign, and channel 7 became KTVB on February 1, 1959. The sale alleviated cash issues for the television station, which struggled financially in its early years and particularly after Boise became a two-station market; in a 1978 interview, Davidson noted that she "lived with the spectre of bankruptcy, a very embarrassing bankruptcy, day or night".

KTVB received a construction permit on December 18, 1963, to expand its reach with the construction of a satellite station on channel 13 in La Grande, Oregon, northwest of Boise. KTVR began broadcasting on December 6, 1964. It initially offered local news and information for Eastern Oregon from studios in La Grande. In 1967, KTVB closed the local operation in La Grande and converted KTVR into a full-time rebroadcaster of the Boise station.

In 1974, KTVB received an offer from the Oregon Educational and Public Broadcasting Service (OEPBS) to acquire KTVR for integration into its statewide public television network and serve large areas of Eastern Oregon. Citing a lack of local viewership and the availability of NBC stations from Spokane and Portland, KTVB took KTVR out of service on March 7, 1975, while the deal was pending; it did not return to the air under OEPBS ownership until February 1977. It was the second time KTVB had provided facilities to public television; in Boise, KTVB aired Sesame Street when the show debuted in 1969, as Idaho did not have a public station at the time, and it provided its transmitter site and engineering resources to launch KAID-TV (channel 4) in 1971.