Gustav Ludwig Hertz, German physicist and academic, Nobel Prize laureate (born 1887)

Gustav Ludwig Hertz was a German atomic physicist who shared the 1925 Nobel Prize in Physics with James Franck "for their discovery of the laws governing the impact of an electron upon an atom".

The Nobel Prize in Physics is an annual award given by the Royal Swedish Academy of Sciences for those who have made the most outstanding contributions to mankind in the field of physics. It is one of the five Nobel Prizes established by the will of Alfred Nobel in 1895 and awarded since 1901, the others being the Nobel Prize in Chemistry, Nobel Prize in Literature, Nobel Peace Prize, and Nobel Prize in Physiology or Medicine. Physics is traditionally the first award presented in the Nobel Prize ceremony.