This entry presents the conceptual frameworks underlying the functional syllabus as they developed in the history of English language pedagogy in modern times, including works by philosophers, linguists, and applied linguists. It summarizes the major features of the functional syllabus in relation to teaching English as an international language, its current status, and potential future evolution in addressing functional, linguistic, and pragmatic competencies. The entry also considers the impact of technology on the functional syllabus and changes in English language teaching paradigms.