KCTB may refer to:

• KCTB-LP, a low-power radio station (94.1 FM) licensed to Lonepine, Montana, United States
• the ICAO code for Cut Bank Municipal Airport in the U.S. state of Montana

• Chondrodactylus pulitzerae
• Chondrodactylus turneri
• Chondroglossus muscles
• Chondrogrohon
• Chondroitin-D-glucuronate 5-epimerase
• Chondrolectin
• Chondrolysis
• Chondrometer
• Chondromorpha xanthotricha
• Chondropterygii
• Chondropyga
• Chondrosteosaurus magnus
• Chondrostoma beysehirense
• Chondrostoma fahirae
• Chondrosum barbatum
• Chondrosum brevisetum
• Chondrosum eriopodum
• Chondrosum trifidum
• Chondrus mamillosus var. sitchensis
• Chondung-Sa
• Chondung-sa
• Chondung-Sa temple
• Chondung-Sa Temple
• Chondung-sa temple
• Chondung-sa Temple