Adolph Franz Friedrich Ludwig Knigge (1752 – 1796) was a German writer, Freemason, and a leading member of the Illuminati. He is best remembered as the author of On Human Relations.
Knigge's involvement with the Illuminati, support of the advancement of human rights, and a period of serious illness led to the loss of support of his aristocratic sponsors and finally his fortune. He found a measure of financial stability again with a position in Bremen, where he died in 1796.