Stefan Mappus (born 4 April 1966) is a German politician from the Christian Democratic Union (CDU).

[1] After losing the 2011 Baden-Württemberg state election Mappus announced his resignation of the party chair.

[3] The public prosecutor's office in Stuttgart opened an investigation on 11 July 2012 against prime minister Stefan Mappus, several other ministers and Dirk Notheis, former head of Morgan Stanley Germany, in connection with the state's controversial purchase of a stake in utility Energie Baden-Wuerttemberg.

[4] Morgan Stanley's German operations, headed by Notheis, in 2010 advised Baden-Württemberg on the purchase of a roughly 45% stake in EnBW from French state-controlled utility Électricité de France for nearly 4.7 billion euros (about $5.77 billion) valuing the asset at a multiple of 6x operating profits.

[10] Stefan Mappus and all others were cleared and informed in letters addressed to their respective lawyers dated 29 October 2014, in which they were also granted the right to make claims for damages.