Alter Friedhof (Old Cemetery) is a historically significant cemetery in Bonn, Germany, 3 acres located near the center of the modern city.

The cemetery was established in 1715 as a cemetery for soldiers and strangers, outside the city walls of the time. It remained in regular use until the new North cemetery opened in 1884, after which burials gradually ceased. It is an area of greenery in the middle of the modern city.

Notable burials or monuments

• Ella Adayevskaya, Russian composer, pianist, and ethnomusicologist
• Friedrich Wilhelm Argelander, astronomer
• Ernst Moritz Arndt, author and poet
• Johann Baptista Baltzer, Catholic theologian
• Maria Magdalena Beethoven, mother of Ludwig van Beethoven
• Gustav Bischof, chemist
• Sulpiz Boisserée, art collector, art historian
• Rudolf Clausius, physicist and mathematician
• Friedrich Christoph Dahlmann, historian and politician
• Fereydoun Farrokhzad, Iranian singer, actor, poet, and TV host
• Heinrich Geißler, glassblower and physicist
• William Keogh, Irish judge
• Franz Peter Knoodt, Catholic theologian and church historian
• August Macke, painter
• Otto Gottlieb Mohnike, physician and naturalist
• Karl Friedrich Mohr, chemist
• Christian Friedrich Nasse, physician and psychiatrist
• Barthold Georg Niebuhr, historian, statesman
• Johann Jakob Nöggerath, mineralogist, geologist
• Julius Plücker, mathematician and physicist
• Joseph Hubert Reinkens, first German Old Catholic bishop
• Franz Anton Ries, violinist; he taught Beethoven violin
• Agnes Salm-Salm, American wife of soldier Felix Salm-Salm
• Hermann Schaaffhausen, anatomist, paleoanthropologist, studied Neanderthal remains
• Mildred Scheel, physician and founder of German Cancer Aid; wife of German president Walter Scheel
• August Wilhelm Schlegel, poet, translator, and leading German Romantic
• Clara Schumann, musician and composer
• Robert Schumann, composer
• Karl Joseph Simrock, poet, mythologist, translator of the Nibelungenlied
• Peter Slodowy, mathematician
• Franz Hermann Troschel, zoologist
• Hermann Usener, scholar of philology and comparative religion
• Gerhard vom Rath, mineralogist
• Charlotte von Lengefeld, writer, wife of Schiller
• Mathilde Wesendonck, poet, author, and friend of Richard Wagner
• Ferdinand Zirkel, geologist, petrographer