|Broadcast area||Tyler-Longview metropolitan area|
|Branding||KTBB 97.5 FM|
|First air date||November 10, 1947|
|Format||News-Talk & Sports|
|Callsign meaning||Tyler Blackstone Broadcasting (original facility owner)|
|Owner||Gleiser Communications, LLC|
|Sister stations||KRWR, KTBB-FM|
KTBB (600 AM; "KTBB 97.5 FM") is an American terrestrial radio station broadcasting a News-Talk format and simulcasted on 97.5 KTBB-FM. Licensed to Tyler, Texas, United States, the station serves the Tyler-Longview area. The stations are currently owned by Gleiser Communications, LLC. KTBB's studios are located in south Tyler along SE Loop 323, and the transmitter is located southeast of Tyler city limits.
The AM station began broadcasting in 1947 on 600 kHz with 500 W power. It was owned and operated by the Blackstone Broadcasting Company.