A brilliant, pragmatic statesman and who worked to unify Germany and was the first Chancellor of the German Empire.
He practiced Realpolitik, a pragmatic approach that is often represented as Machiavellian.
He was called the Iron Chancellor because of a speech he made saying that "The great questions of the time will not be resolved by speeches and majority decisions...but by iron and blood."

He predicted that World War I will start because of "some damned fool thing in the Balkans."

Putting his poster on your office is a great way to piss off uber liberal college students.
"A conquering army on the border will not be stopped by eloquence."

"He who has his thumb on the purse has the power."

-Otto von Bismarck

SL students shit a brick when they see a picture of Otto von Bismarck on my professor's wall.
by dangcmange2 November 29, 2009
When you authoritatively slap someone in the face with your penis, a.k.a., a "bismarck" with authority.
Shutup bitch or i will Otto von Bismarck you!
by Aaron Skydiving March 18, 2005