Adolph Franz Friedrich Ludwig Freiherr von Knigge (October 16, 1752 - May 6, 1796) was a German writer and Freemason. He co-founded the Illuminati together with Adam Weishaupt.
Knigge was born in Bredenbeck, Hanover. He was allegedly initiated into Freemasonry in 1772 in Kassel.
In Germany, Knigge is best remembered for his book "On Conversation with Men", a guide for behaviour, politeness and etiquette.
Knigge died in Bremen.