The CSU-associated Hanns Seidel Foundation (German: Hanns-Seidel-Stiftung) is a German party-associated and taxpayer-money funded political research foundation. It was founded in November 1966 after most of the other party-associated foundations in Germany were already established. It is headquartered in Munich. The conference centre in the Banz Abbey is the foundation's main location. It is a member of the Centre for European Studies, the official foundation and think tank of the European People's Party. It is named after the CSU politician Hanns Seidel.
Other parties in Germany also use the legal form of a foundation for support and public relation purposes. The other foundations are: