From Wikipedia, the free encyclopedia. The best regiment in the Holdfast community. The European Commission formally requested, on 27 November, the Austrian telecoms regulator (TKK) to withdraw or amend its proposal for regulating. What does TKK mean? This page is about the various possible meanings of the acronym, abbreviation, shorthand or slang term: TKK. What does TKK stand for? What does TKK mean? We have 3 definitions.