KNIN-TV (channel 9) is a television station licensed to Caldwell, Idaho, United States, serving as the Fox affiliate for the Boise area. The station is owned by Marquee Broadcasting. KNIN-TV's transmitter is located at the Bogus Basin ski area summit in unincorporated Boise County, with its technical and news operations based out of the studios of Sinclair Broadcast Group–owned KBOI-TV (channel 2) on North 16th Street in Boise under a facilities and services agreement.
The station signed on at the end of 1992 as KHDT-TV. Originally airing home shopping programming, the station raised its profile by affiliating with UPN in 1995. It then became a full-time general-entertainment station the next year under new KNIN-TV call letters. Journal Broadcast Group, then-owner of ABC affiliate KIVI-TV, acquired KNIN-TV in 2009 after appealing an FCC decision denying the purchase. Two years later, in the wake of a dispute between Fox and its then-affiliate, KTRV-TV, KNIN-TV replaced it as Boise's Fox affiliate. When the E. W. Scripps Company merged with Journal in 2015, it could not acquire the KNIN-TV license, which was transferred to