费边社（英语：Fabian Society）是英国的一个社会主义团体，成立于1884年，由一群中产阶级知识分子所发起，以古罗马名将费边（Fabius）做为学社名称的来源，意即师法费边亚有名的渐进求胜的策略。其奉行的思想被称为费边主义（Fabianism），又称费边社会主义（Fabian Socialism）。费边社的传统重在务实的社会建设，倡导创建互助互爱的社会服务，其实质在于把资本主义社会传统的自由民主政治与社会主义相结合，从而推行和平宪政和市政社会主义的道路。主张通过渐进温和的改良主义方式来走向社会主义，而非透过列宁主义所主张的阶级革命，并强调通过教育的途径让权力回到知识精英的手中。

The Fabian Society is a British socialist organisation whose purpose is to advance the principles of democratic socialism via gradualist and reformist effort in democracies, rather than by revolutionary overthrow. As founders of the Labour Party in 1900, the Fabian Society has influenced British policy to the present day, from the postwar creation of the modern welfare state to the election of Tony Blair. Later members of the Fabian Society included Jawaharlal Nehru and other leaders of new nations created out of the former British Empire, who used Fabian principles to create socialist democracies in India, Pakistan, Nigeria and elsewhere as Britain decolonised after World War II.