This article explores the unique characteristics of commercial law in Islamic countries, emphasizing the profound influence of Sharia (Islamic law) on legal principles and practices. Unlike Western commercial law, which is predominantly secular and profit-driven, Islamic commercial law integrates religious principles that prioritize ethical conduct, fairness, and social justice. The discussion delves into the foundational aspects of Sharia, including the prohibition of Riba (usury) and Gharar (excessive uncertainty), and how these principles shape contract formation, dispute resolution, and financial transactions. The article also examines the practical implications for businesses operating within this legal framework, highlighting the challenges and opportunities presented by the growing field of Islamic finance. By providing a comprehensive overview of these peculiarities, the article aims to enhance understanding and appreciation of the distinctive legal landscape in Islamic countries, offering valuable insights for legal practitioners, scholars, and business professionals engaged in international commerce.