Thomas Silberhorn became Parliamentary State Secretary to the German Federal Minister of Defence in 2018. He served in the same position at the German Federal Ministry for Economic Cooperation and Development from 2014 to 2018. In the German Bundestag, he was CSU spokesperson for Foreign Affairs, Defence, European Union Affairs Economic Cooperation and Development, Human Rights and Humanitarian Aid from 2005 to 2013. Thomas Silberhorn has been a member of the German Bundestag since 2002.

After receiving his degree in law in 1994 he was Academic Assistant at the University of Bayreuth and has been working as a lawyer since 2001 (currently dormant).