Wilhelm Launhardt

Carl Wilhelm Friedrich Launhardt (7 April 1832 – 14 May 1918) was a German mathematician and economist.

Launhardt was born in Hanover, the capital of the Kingdom of Hanover. He studied and taught at Hanover's technical school. Following Hanover's annexation by the Kingdom of Prussia, Launhardt served in the Prussian House of Lords.

In 1885 he succeeded in calculating the optimal rate of duties in the sense of the effects of the terms of trade.