 Nicolas (or Nicholas) Koechlin (1781–1852) was a brother of Jacques Koechlin and a grandson of Samuel Koechlin.He created the company Nicolas Koechlin et Frères, which branched out of the textile industry.He was instrumental in promoting the installation of railway lines in Alsace, with the Strasbourg-Basel line and the Mulhouse-Thann line in the 1830s.