KWWL (channel 7) is a television station licensed to Waterloo, Iowa, United States, serving as the NBC affiliate for Eastern Iowa. Owned by Allen Media Group, KWWL maintains studios on East 5th Street in Waterloo, with news bureaus and advertising sales offices in Cedar Rapids, Dubuque and Iowa City. The station's transmitter is located north of Rowley, Iowa, a city in Buchanan County.

When the Federal Communications Commission (FCC) opened up bids for channel 7 in Waterloo, it was obvious that the license would either go to Sonderling Broadcasting, owner of KXEL (1540 AM), or R.J. McElroy and his Black Hawk Broadcasting Company, owner of KWWL (1330 AM, now KPTY). After a long legal battle, Black Hawk won the license, and KWWL-TV signed on for the first time on November 26, 1953.

The station was originally affiliated with NBC and the DuMont network. During the late 1950s, the station was also briefly affiliated with the NTA Film Network.

In 1980, Black Hawk agreed in principle to merge with Forward Communications. However, the FCC told Black Hawk and Forward that the combined company would have to sell either the radio stations–KWWL radio and KFMW–or channel 7. The KWWL stations had been grandfathered under a 1970s FCC rule banning common ownership of radio and television stations. When Forward decided to keep the radio stations, Black Hawk sold channel 7, along with then-sister station KTIV in Sioux City, to AFLAC just before the merger closed. In 1997, AFLAC sold its entire broadcasting division, including KWWL, to Raycom Media.

In 2006, Raycom sold KWWL and a handful of other stations following its purchase of the Liberty Corporation in late 2005. Quincy Newspapers became owner of KWWL on July 1, 2006. The merger made QNI the owner of four of the NBC affiliates serving Iowa, along with flagship station WGEM-TV in Quincy, Illinois, KTTC in Rochester, Minnesota, and Black Hawk/AFLAC sibling KTIV, which had been sold to QNI in 1989.

KWWL shut down its analog signal, over VHF channel 7, on February 17, 2009, the original target date on which full-power television stations in the United States were to transition from analog to digital broadcasts under federal mandate (which was later pushed back to June 12, 2009). The station's digital signal relocated from its pre-transition UHF channel 55, which was among the high band UHF channels (52-69) that were removed from broadcasting use as a result of the transition, to VHF channel 7. The "KWWL" callsign was legally transferred from the now-defunct analog channel 7 to the new digital channel 7, with the "KWWL-DT" callsign being permanently discontinued.

On November 1, 2010, the FCC granted KWWL a construction permit for a 300-watt digital fill-in translator on channel 7 (the same frequency as their main channel). The translator would serve the immediate part and areas northwest of Dubuque. The permit was later canceled on June 6, 2013.

On January 7, 2021, Quincy Media announced that it had put itself up for sale. A few weeks later, Gray Television announced its intent to purchase Quincy for $925 million. As Gray already owns the market's KCRG-TV and both stations rank among the top four in ratings in the Cedar Rapids–Waterloo market, it intended to keep KCRG-TV and divest KWWL in order to satisfy FCC requirements. On April 29, 2021, it was announced that Allen Media Group would acquire KWWL and the remaining Quincy stations not being acquired by Gray Television for $380 million. The sale was completed on August 2 the same year, making KWWL a sister station to CBS affiliate KIMT in nearby Mason City. Gray's decision to sell KWWL came as an ironic twist, given that they had acquired the station's previous owner Raycom in 2019.