Johann Kremenezky

Johann Kremenezky (also Kremenetski or Kremenetzky) (Hebrew: יונה קרמנצקי) (February 15, 1850 – October 25, 1934),  was a Zionist industrialist, electrical engineer, founder of the Jewish National Fund, and personal secretary and adviser to Theodor Herzl.

Biography
Jonas Yosipovich Levinson (later Yona Kremenezky) was born in Odessa. He was the owner of Kremenezky, Mayer & Co, a noted electric lighting company in Vienna. 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.

Zionist activism
Kremenezky was the first chairman of the Jewish National Fund (JNF) from 1902 to 1907. JNF's blue collection boxes were distributed by the JNF almost from its inception at the initiative of Kremenezky. Once found in many Jewish homes, the boxes became one of the most familiar symbols of Zionism. Additionally he sold stamps to raise funds.

Awards and recognition
In 1930, he was awarded the Wilhelm Exner Medal On 20 June 1956 a street was named after him in Vienna, called Kremenetzkygasse.

Streets in Tel Aviv and Jerusalem are named for him.