KING-FM (98.1 MHz; "Classical KING") is a non-commercial classical music radio station in Seattle, Washington. It is owned by Classic Radio, a nonprofit organization. The studios and offices are on Mercer St in Seattle. KING-FM holds periodic on-air fundraisers to help support the station through listener contributions.

KING-FM's transmitter is located in Issaquah on Tiger Mountain. Its effective radiated power (ERP) is 66,000 watts (68,000 with beam tilt). KING-FM broadcasts in the HD Radio format, using two subchannels for alternate classical programming.

The station that today is KING-FM first signed on the air in December 1947, originally at 94.9 MHz. It was owned by King Broadcasting, whose co-owner and president was Dorothy Bullitt. The year before, Bullitt had purchased KEVR (1090 AM) and changed it to KING (now KPTR). (Seattle is located in King County, for which its call letters were chosen.)

In 1949, King Broadcasting bought 98.1 KRSC-FM, which had gone on the air in February 1947 under different ownership. KING-FM moved from 94.9 to 98.1 MHz, replacing KRSC-FM. The 94.9 transmitter was donated to Edison Vocational School, which used it to broadcast educational programming on that frequency. In 1958, the 94.9 frequency was taken over by KUOW-FM, owned by the University of Washington, and now a public news-talk station affiliated with NPR.

Concurrent with the purchase of KRSC-FM, King Broadcasting also acquired KRSC-TV (channel 5), which had signed on the previous year. The call letters were changed to KING-TV. The three stations, KING-AM-FM-TV, had their studios and offices at 320 Aurora Avenue North in Seattle.

At first, KING-FM simulcast its AM counterpart. Over time, it began airing classical programs separate from the AM station, and by the late 1960s, it was exclusively a classical outlet, a format that has continued to be broadcast on the station since.

During the late 1970s, KING-FM carried syndicated concert broadcasts by the Philadelphia Orchestra, usually under direction of Eugene Ormandy, the New York Philharmonic, and the Boston Symphony. Many of the syndicated concert programs featured well-known instrumentalists and conductors performing works which they never recorded commercially - e.g. Leonard Bernstein conducting the New York Philharmonic in a highly memorable 1976 reading of Bruckner's Sixth Symphony in A major.

In the mid-1970s, KING-FM's schedule also included specialized programs showcasing Quadraphonic LP recordings and historical recordings. In 1983, KING-FM was the first station in the Seattle area to utilize compact disc (CD) technology for its recordings.^{[citation needed]}