In this paper, we introduce a groundbreaking approach to addressing modern challenges in Supply Chain Management (SCM) through the application of Ethereum Smart Contracts on the Ethereum Blockchain. Our innovative solution leverages the decentralized and immutable nature of blockchain technology to significantly enhance data integrity, transparency, and operational efficiency within the supply chain. By automating and enforcing contractual agreements on the Ethereum platform, we effectively resolve issues of trust, transparency, and data inconsistencies that plague traditional SCM processes. This paper delves into the profound impact of Ethereum Smart Contracts in reducing operational costs, fostering seamless collaboration among supply chain stakeholders, and providing real-time traceability of goods. Through rigorous empirical analysis and detailed case studies, we demonstrate the practical viability and substantial benefits of Ethereum-based solutions, heralding a new era of reliability and efficiency in Supply Chain Management systems.