KAEF-TV (channel 23) is a television station licensed to Arcata, California, United States, serving as the ABC affiliate for the Eureka area.

Sinclair also provides certain services to Eureka-licensed Fox affiliate KBVU (channel 28) under a local marketing agreement (LMA) with Cunningham Broadcasting; however, Sinclair effectively owns KBVU as the majority of Cunningham's stock is owned by the family of deceased group founder Julian Smith.

The four stations share studios on Sixth Street in downtown Eureka; KAEF-TV's transmitter is located along Barry Road southeast of the city.

[3] In June 1988, Mad River put KREQ up for sale; in 1989, it sold the station to California Oregon Broadcasting (COBI), owner of KRCR-TV.

[3] COBI already owned two radio stations in Eureka, KFLI (790 AM, now KEJY) and KEKA-FM (101.5), which were sold off as a condition of the purchase of channel 23.

California Oregon Broadcasting sold KAEF, along with KRCR-TV and its other satellite station, KFWU in Fort Bragg (now KQSL in Cloverdale), to Lamco Communications for $11.925 million in 1995.

General manager Andrew Stewart went to the internet at the station's website to share his frustrations with the viewers and called out Dish Network.