Neturei Karta (Jewish Babylonian Aramaic: נָטוֹרֵי קַרְתָּא, romanized: nāṭōrēy qartāʾ, lit. 'Guardians of the City') is a religious group of Haredi Jews, formally created in Jerusalem, then in Mandatory Palestine, in 1938, splitting off from Agudas Yisrael. Neturei Karta opposes Zionism and calls for a "peaceful dismantling" of the State of Israel, in the belief that Jews are forbidden to have their own state until the coming of the Jewish Messiah and that the state of Israel is a rebellion against God. While the Neturei Karta describe themselves as true traditional Jews, the more secular US-based Jewish Anti-Defamation League has described them as "the farthest fringes of Judaism".

In Israel, some members also pray at affiliated beit midrash, in Jerusalem's Meah Shearim neighborhood and in Ramat Beit Shemesh Bet. Neturei Karta states that no official count of the number of members exists. The Anti-Defamation League estimates that fewer than 100 members of the community take part in anti-Israel activism. According to the Anti-Defamation League, members of Neturei Karta have a long history of "extremist statements" and support for notable anti-Zionists and Islamists.

According to the US branch of Neturei Karta:

The name Neturei Karta is a name usually given to those people who regularly pray in the Neturei Karta synagogues (Torah Ve'Yirah Jerusalem, Torah U'Tefillah London, Torah U'Tefillah NY, Beis Yehudi Upstate NY, etc.), study in or send their children to educational institutions run by Neturei Karta, or actively participate in activities, assemblies or demonstrations called by the Neturei Karta.