This paper discusses the definition of Thagut using the semiotics theory of Julia Kristeva. The method used in this research is library research or library research is research whose data is obtained through literature related to the theme being studied. From this study, it was found that the word Thagut in the Koran has various definitions when analyzed using the semiotic theory of Julia Kristeva. Thagut has many meanings such as arbitrariness, deviant belief, transgressing, transgressing truth, transcending consciousness. Regarding the implied meaning of the word Thagut, Mufassirs such as Sayyid Qutb and Buya Hamka have different views according to the experience and environment of each Mufassir. The Mufassir from Indonesia, namely Buya Hamka in the Al-Azhar commentary, stated that Thagut is believing in superstitious things such as sacrificing certain scholars, which is sometimes done by the Indonesian people. Buya Hamka also gave an example that the government of Thagut is like the government of Pharaoh and King Namrud, where these two leaders are recognized and acknowledge themselves as God and must be worshipped by their people. Sayyid Qutb interprets the word Thagut as all actions that are not guided by the teachings of Islam. -the teachings set by Allah, are not ruled by sharia law or Allah’s law. And this definition is used by terrorist groups to justify their heinous deeds.