The Indian Ocean has emerged as a critical centre of global strategic and economic activity due to its importance for international trade, energy transportation, and geopolitical competition. As developments in the region increasingly influence global security dynamics, India has intensified its maritime focus to safeguard national interests, secure vital sea lines of communication, and promote regional stability. This study critically analyses India's maritime security strategy in the Indian Ocean, with particular attention to naval modernization, maritime domain awareness, strategic partnerships, and diplomatic engagement. The research evaluates India's participation in regional and multilateral security frameworks, its defence cooperation with neighbouring states and major powers, and its responses to both traditional and non-traditional maritime threats. Particular emphasis is placed on issues such as piracy, maritime terrorism, illegal trafficking, smuggling, and the growing strategic presence of extra-regional actors in the Indian Ocean. The study also examines India's efforts to strengthen cooperative security arrangements through initiatives aimed at enhancing regional maritime governance and collective security.