TBK may refer to:
The Black Keys "The" Brian Kendrick The Brothers Karamazov TANK-binding kinase 1 Teargarden by Kaleidyscope The Big Kahuna (film) Funnelbeaker culture or TBK (German: Trichter(-rand-)becherkultur), an archaeological culture in north-central Europe. To Be Kind, the 13th studio album by Swans
Tbk may stand for terbuka ("open"), a suffix for Indonesian companies indicating a publicly traded company at the Jakarta Stock Exchange