WABI-TV (channel 5) is a television station in Bangor, Maine, United States, affiliated with CBS and The CW Plus. Owned by Gray Media, the station has studios on Hildreth Street in West Bangor, and its transmitter is atop Peaked Mountain in Dixmont.

Prior to 2017, WABI-TV was the flagship station of its founding owner Diversified Communications, which was owned by the Hildreth family of Bangor.

Community Broadcasting Service, owners of WABI radio (910 AM, now WTOS; and 97.1 FM, now WBFB), filed to apply for a construction permit on July 7, 1952. The permit was granted on December 31, 1952.

WABI-TV was the first television station in Maine and the first in northern New England. It began broadcasting with test transmissions on January 25, 1953, and started its official broadcast on January 31. It was managed in its early years by Murray Carpenter. The station was a primary NBC affiliate, but carried secondary affiliations with the other three major networks of the day (CBS, ABC, and DuMont). It lost CBS to WTWO (channel 2) in 1955; that station had been founded by Carpenter. It lost DuMont soon afterward when that network shut down. After Carpenter sold WTWO to the Rines-Thompson family in 1959, the new owners changed that station's calls to WLBZ-TV and swapped affiliations with WABI-TV, making channel 5 a primary CBS affiliate. The two outlets then began to share ABC programming, which had previously been exclusive to WABI. This ended when WEMT (channel 7, now WVII-TV) signed-on in 1965 and took the affiliation. During the late 1950s, WABI was also briefly affiliated with the NTA Film Network.

The only other station that the Community Broadcasting Service would build and sign on was WMTW in Poland Spring, Maine. This was because the ownership of that station's founder Mount Washington Television, partially overlapped with Community Broadcasting Service. (WMTW was sold in 1964.) In 1957, it purchased WAGM-TV-AM in Presque Isle, Maine; it sold off WAGM radio in 1981 and WAGM-TV in 1984. Community Broadcasting Service merged with Journal Publications to form Diversified Communications in 1971; after the merger, it acquired such stations as WCTI-TV in New Bern, North Carolina, WYOU in Scranton–Wilkes-Barre, Pennsylvania, WPDE in Florence–Myrtle Beach, South Carolina, and WCJB-TV in Gainesville, Florida. Most of these stations were sold off by the late 1990s; by 2017, it was down to two stations: WABI-TV and WCJB-TV.

The radio stations were eventually spun off in 1993 and are currently under the ownership of Blueberry Broadcasting.

At one point, WABI operated an analog repeater (W61AO channel 61) licensed to Calais with a transmitter in Meddybemps. The transmitter tower was shared with W57AQ channel 57 which repeated WLBZ. Until the mid-1990s, W61AO was used to feed cable systems across the border to the Canadian Maritimes. With the advent of CANCOM, however, WABI's cross-border carriage declined. It is not offered on any systems across the border today including those in St. Stephen, New Brunswick, within W61AO's former signal range. Most cable systems in Atlantic Canada now carry WBZ-TV from Boston for CBS programming. The W61AO license was canceled by the FCC at WABI's request on November 9, 2009.

On July 15, 2014, WABI-TV's contract with Dish Network expired, and both the station and WABI-DT2 were blacked out early on July 16, 2014. Among the issues WABI-TV cited included financial terms, customer service issues between the station and Dish Network, and switching viewers in several counties to another CBS station outside the Bangor media market (such as WGME in the Portland area). After a breakdown of contract talks which picked up slowly, an agreement was reached October 8, 2014, allowing both stations to return to Dish Network later that day.