Eisenträger or Eisentrager is a surname. Notable people with this name include:

Alois Eisenträger (1927–2017), a German footballer Kirsten Eisenträger, an American mathematician Stian Eisenträger, a Norwegian journalist Thor Eisentrager, an American musician

See also Johnson v. Eisenträger, a major U.S. Supreme Court case decided in 1950