Hessenberg may refer to:

People:

  • Gerhard Hessenberg (1874–1925), German mathematician
  • Karl Hessenberg (1904–1959), German mathematician and engineer
  • Kurt Hessenberg (1908–1994), German composer and professor at the Hochschule für Musik und Darstellende Kunst in Frankfurt am Main

Mathematics:

  • Hessenberg matrix, one that is "almost" triangular
  • Hessenberg variety, a family of subvarieties of the full flag variety which are defined by a Hessenberg function h and a linear transformation X