Geissler

Geissler or Geißler may refer to:

Persons

 * Ernst Geissler (1915–1989), German and American aerospace engineer
 * Fritz Geißler (1921–1984), German composer
 * Heiner Geißler (1930–2017), German politician (CDU)
 * Ines Geißler (born 1963), German swimmer
 * Heinrich Geißler (1814–1879), German physicist
 * Martin Geissler (born 1971), Scottish news reporter
 * Phillip Geissler (1974–2022), American theoretical chemist
 * Siegfried Geißler (1929–2014), German composer, conductor, hornist and politician
 * Sina-Aline Geißler (born 1965), German writer and journalist
 * William Geissler (1894–1963), Scottish painter

Others

 * Geissler (crater), lunar crater named for Heinrich Geißler
 * Geißler (Lauer), river in Bavaria, Germany
 * Geissler Mountain, mountain in Colorado, US