Johann Martin Usteri (14 February 1763 in Zürich – 29 July 1827, Rapperswil) was a Swiss poet, noted for his narrative poetry and his idylls. He was one of the earliest poets to write poems in Swiss German, specifically in his native Zürich dialect; among these, his Vicar holds the foremost place.
Johann Martin von Wagner was a German painter, sculptor and art collector. Through the donation of his extensive art collection the Martin von Wagner Museum of the University of Würzburg, named after him, became one of the largest university museums in Europe.
Johann Michael Sailer was a German Jesuit theologian and philosopher, and Bishop of Regensburg. Sailer was a major contributor to the Catholic Enlightenment.
Johann "Hans" Nelböck was an Austrian former student and murderer of Moritz Schlick, the founder of the group of philosophers and scientists known as the Vienna Circle.
Johann Nepomuk Hummel was an Austrian composer and virtuoso pianist. His music reflects the transition from the Classical to the Romantic musical era. He was a pupil of Mozart, Salieri and Clementi. He also knew Beethoven and Schubert.
Johann Nepomuk Eduard Ambrosius Nestroy was a singer, actor and playwright in the popular Austrian tradition of the Biedermeier period and its immediate aftermath. He participated in the 1848 revolutions and his work reflects the new liberal spirit then spreading throughout Europe.
Johann Nikolaus Forkel was a German musicologist and music theorist, generally regarded as among the founders of modern musicology. His publications include Johann Sebastian Bach: His Life, Art, and Work, the first substantial survey on the life and works of Johann Sebastian Bach.
Johann Nikolaus von Hontheim was a German historian and theologian. He is remembered as Febronius, the pseudonym under which he wrote his 1763 treatise On the State of the Church and the Legitimate Power of the Roman Pontiff and which gave rise to febronianism.