Johann Jakob Widmann
- Category : 1799-births
- Type : MGP
- Profile : 3/5 - Martyr / Heretic
- Definition : Single
- Incarnation Cross : RAX The Four Ways 4
German businessman, an entrepreneur who founded the German paper machine industry. From 1830 to 1850, he had more than 50 paper machines built to his own design and set up throughout Europe. His model was also successfully copied by others. Widmann founded the Widmann paper machine factory in the Widmann valley in Neckargartach, which was later named after him. He emigrated to America on 22 August 1849 after the bankruptcy and foreclosure of his property. He died there in 1876.