Telemark County Municipality (Norwegian: Telemark fylkeskommune) was the regional governing administration of the old Telemark county in Norway. The county municipality was established in its current form on 1 January 1976 when the law was changed to allow elected county councils in Norway. The county municipality was dissolved on 1 January 2020, when Telemark was merged with the neighboring Vestfold county, creating the new Vestfold og Telemark county which is led by the Vestfold og Telemark County Municipality.