This paper examines the central role of silence (mouna) in the philosophy and spiritual practice of Sri Ramana Maharshi. Unlike many modern religious teachers who relied primarily on doctrinal exposition or ritual instruction, Ramana Maharshi upheld silence not merely as the absence of speech but as the very nature of the Self and the highest mode of spiritual transmission. The study explores how silence functions simultaneously as ontology, method, and realization in his teaching. It analyses his understanding of the ‘I-thought’ as the root of ego-consciousness and explains how the cessation of this thought reveals pure awareness, which he identifies as the silent Self. The paper further investigates the epistemological implications of his view, particularly his critique of conceptual and subject–object knowledge, emphasizing that true knowledge arises only in non-dual silence. Attention is also given to the role of silence in devotion, worship, initiation (diksha), and sat-sanga, demonstrating how silent presence operates as a transformative spiritual force independent of verbal instruction or physical proximity. By situating silence as the highest form of grace and teaching, the paper argues that Ramana Maharshi presents a radical reinterpretation of spiritual communication in which silence is both the path to Self-realization and its ultimate fulfillment.