List of Famous people named Johann

Johann Nepomuk Czermak was an Austrian-German physiologist who was a native of Prague.

Johann Karl Wezel, also Johann Carl Wezel, was a German poet, novelist and philosopher of the Enlightenment.

Johann Friedrich, Freiherr Cotta von Cottendorf was a German publisher, industrial pioneer and politician.

Johann Moritz Rugendas was a German painter, famous in the first half of the 19th century for his works depicting landscapes and ethnographic subjects in several countries in the Americas. Rugendas is considered "by far the most varied and important of the European artists to visit Latin America." He was influenced by Alexander von Humboldt.

Johann Heinrich Roos was a German Baroque era landscape painter and etcher.

Johann I Joseph was Prince of Liechtenstein between 1805 and 1806 and again from 1814 until 1836. He was the last Liechtenstein prince to rule under the Holy Roman Empire between 1805 and 1806 and as regent of Liechtenstein from 1806 until 1814. He was the fourth son of Franz Joseph I, Prince of Liechtenstein.

Johann Gerhard Oncken was a pioneer German Baptist preacher, variously referred to as the "Father of Continental Baptists", the "Father of German Baptists" and the "Apostle of European Baptists". Oncken, Gottfried Wilhelm Lehmann (1799–1882), and Julius Wilhelm Köbner (1806–1884) were known as the Baptist cloverleaf. J. G. Oncken helped direct and guide the growth of Baptists throughout Germany and across much of Europe for half a century.

Johann Franz Encke was a German astronomer. Among his activities, he worked on the calculation of the periods of comets and asteroids, measured the distance from the earth to the sun, and made observations of the planet Saturn.

Johann Adolf II, Duke of Saxe-Weissenfels, was the last duke of Saxe-Weissenfels-Querfurt and a member of the House of Wettin. He was also a commander in the Saxon army.

Johann-Andreas Schubert was a German general engineer (Universalingenieur), designer and university lecturer.