The Zionist occupation government, Zionist occupational government or Zionist-occupied government (ZOG), sometimes also referred to as the Jewish occupational government (JOG), is an antisemitic conspiracy theory claiming Jews secretly control the governments of Western states. According to believers, a secret Zionist organization controls international banks, and through them the governments, in order to collude against white, Christian, or Islamic interests.

The expression is used by white supremacist, white nationalist, far-right, nativist, or antisemitic groups in Europe and the United States as well as by ultra-nationalists such as Pamyat in Russia and various far-right groups including the Freemen, Identity Christians and the Ku Klux Klan.

The word Zionist in "Zionist occupation government" should not be confused with the ideology of Zionism, the movement for support of a Jewish state in the Land of Israel. As the conspiracy theorists chiefly name countries outside that area, the usage of Zionist in this context is misleading because it is intended to portray Jews as conspirators who aim to control the world as depicted in the forged Protocols of the Elders of Zion.