Paul Giesler (born 15 June 1895 in Siegen; died 8 May 1945 in Berchtesgaden) was a member of the NSDAP, from 1941 NSDAP Gauleiter of Westphalia-South (Westfalen-Süd) and as of 1942 also acting Gauleiter of the Gau Munich-Upper Bavaria (Gau München-Oberbayern). He was from 2 November 1942 to 28 April 1945 the Premier (Ministerpräsident) of Bavaria.
In Munich, Giesler was known for speaking out against higher education for women, provoking student walk-outs of his speeches. He was also known for the capture and defeat of the White Rose (Weiße Rose) student resistance movement. In April 1945, he was appointed Reich Defence Commissar-South and with help from SS units brutally quelled the "Freedom Action Bavaria" ("Freiheitsaktion Bayern") uprising under Captain Dr. Rupprecht Gerngroß in Munich. In Adolf Hitler's will of 29 April 1945, Giesler was made Reich Minister for the Interior. He never had the chance to assume this latest post, though.
On 8 May 1945, Nazi capitulation day, Giesler and his wife committed suicide, fearing capture by American troops as they fled Berchtesgaden.
Giesler was an unquestioning follower of Hitler, ruling efficently and with almost unlimited power in the last war years in Bavaria.