Johann Kremenezky, also called Kremenetski or Kremenetzky (Hebrew: יונה קרמנצקי) was born February 15, 1850, and died on October 25, 1934.

[1] He was a Zionist industrialist, electrical engineer, founder of the Jewish National Fund, and personal secretary and adviser to Theodor Herzl.

He was the owner of Kremenezky, Mayer & Co, a noted electric lighting company in Vienna.

[2] In the summer of 1896, Kremenezky met with Theodor Herzl, leader of the Zionist movement, to discuss the implementation of modern technology in the future Jewish state.

[6] In 1930, he was awarded the Wilhelm Exner Medal[7] On 20 June 1956 a street was named after him in Vienna, called Kremenetzkygasse.