The political ideologisation of Islam refers to the interpretation of Islam as a ‘political ideology’: a comprehensive ‘system of ideas for social and political action’ (Safire, 2008: 336) which serve as a functional tool for the ordering of state and society, whilst also outlining how this ideal socio-political order might be attained (Erikson and Tedin, 2003: 64). It is precisely this tendency to interpret Islam as a political ideology which scholars frequently attribute to the twentieth century Egyptian and founder of the Muslim Brotherhood, Hasan al-Banna. This text will therefore assess the extent to which al-Banna’s thought signifies the political ideologisation of Islam in the twentieth century. To do so, it will first combine a contextual appreciation with an explanation of al-Banna’s call for the establishment of an Islamic State, rooted in his understanding of Islam as a perfect, all-embracing political solution. The text will then proceed to explore al-Banna’s political ideologisation of Islam, focusing on his calling for ‘Islamic governance’, his Fifty-Point Manifesto, his portrayal of Islam as an alternative to competing ideologies and his founding of the Muslim Brotherhood. Next, the text will consider other twentieth century thinkers who have also contributed to Islam’s political ideologisation, notably Sayyid Abu’l-A’la al-Mawdudi and Sayyid Qutb. Finally, this analysis will conclude by outlining the notion that al-Banna’s thought does indeed signify the political ideologisation of Islam, but must nevertheless be appreciated within a broader ‘neo-revivalist’ tendency to politically ideologise Islam.