Kummer is a German surname. Notable people with the surname include:Bernhard Kummer (1897–1962), German Germanist
Clare Kummer (1873–1958), American composer, lyricist and playwright
Clarence Kummer (1899–1930), American jockey
Christopher Kummer, German economist
Corby Kummer, American journalist
Dirk Kummer, German actor, director, and screenwriter
Eberhard Kummer (1940–2019), Austrian concert singer, lawyer, and medieval music expert
Eduard Kummer, also known as the following Ernst Kummer
Eloise Kummer (1916–2008), American actress
Ernst Kummer (1810–1893), German mathematician
Kummer configuration, a mathematical structure discovered by Ernst
Kummer surface, a related geometrical structure discovered by Ernst
Ferdinand von Kummer (1816–1900), German general
Frederic Arnold Kummer (1873–1943), American author, playwright, and screenwriter
Friedrich August Kummer (1797–1879), German cellist and composer
Karl Kummer (disambiguation), more than one person
Kaspar Kummer (1795–1870), German flautist and composer
Lilian Kummer, Swiss skier
Luise Kummer, German biathlete
Mario Kummer, German cyclist
Nicolas Kummer (1882–1954), Luxembourgish gymnast
Paul Kummer (1834–1912), priest, taxonomist of Zerbst
Patrizia Kummer, Swiss snowboarder
Samuel Kummer (1968–2024), German organist
Siegfried Adolf Kummer (1899–1977), German mystic and Germanic revivalist
Sigrud Kummer,, German sprint canoeist
Thomas Kummer, American classicist and teacher
Thomas John Kummer (1933–1969), American hair stylist known as Jay Sebring
Tilo Kummer, German politician
Tom Kummer, Swiss journalist
Wolfgang Kummer (disambiguation), more than one person