KETK-TV (channel 56) is a television station licensed to Jacksonville, Texas, United States, serving as the NBC affiliate for East Texas. It is owned by Nexstar Media Group alongside Tyler-licensed low-power MyNetworkTV affiliate KTPN-LD (channel 48); Nexstar also provides certain services to Longview-licensed Fox affiliate KFXK-TV (channel 51) under a shared services agreement (SSA) with White Knight Broadcasting. The stations share studios on Richmond Road (at Loop 323) in Tyler, while KETK-TV's transmitter is located near FM 855 in unincorporated northwestern Cherokee County.