From a young age, Huth was already a member of the German national team. He also played at the 2003 FIFA World Youth Championship. Huth was first invited on 16 August 2004 in the senior national team of Germany, when he was nominated for the friendly match at the Ernst Happel Stadium in Vienna against Austria. Two days later, he appeared as a substitute in this friendly match in the 86th minute for Andreas Hinkel.