This article analysed the evolution of Haredi Judaism in Israel, highlighting its deep-rooted fundamentalist beliefs and its transformation from a marginalised group to a central force in Israeli society. As the fastest-growing demographic, the Haredi community exemplified the tension between fundamentalism and modernity. The study explored the defining characteristics, political ideologies and social influence of Haredi Judaism in Israel, detailing how it transitioned from insular religious enclaves to active participants in national politics. The article also examined the Haredi impact on Israeli-Palestinian relations, focusing on their influence on party politics, land disputes and Jerusalem-related issues.Contribution: The study enhanced the understanding of Haredi Judaism’s ideological evolution and political integration within Israeli society. It highlighted the Haredim’s influence in shaping Israel’s national identity and policy directions. Additionally, the research elucidated the significant impact of the Haredi community on Israeli-Palestinian relations.