International investment is no longer just an area for large corporations or some professional investors. Today, mid-sized companies, startups, and even individual investors are actively seeking cross-border capital movement and business expansion. In this trend of the times, this book was written to help foreigners understand the process of investing in Korea more clearly and have a strategic approach. When a foreigner establishes a company, acquires company ownership, takes over a business, or invests in a specific project in Korea, various laws and procedures, reporting and licensing systems, taxation, accounting, and contractual issues will work in combination. To systematically analyze foreign investment in Korea from a legal point of view, the areas to be dealt with are very large, and there are thousands of pages of professional books in each statute alone, such as the Foreign Exchange Act, the Commercial Act, the Fair Trade Act, the Capital Markets Act, tax laws, and laws on industrial regulations. This book is not intended to replace such professional books, but rather to summarize the key issues that foreign investors face first and most practically when considering investment through companies in Korea . Rather than in-depth academic discussions or theories, the focus was on practical content that management can understand and utilize in practical investment judgment and implementation. In particular, this book divides the process of foreign investment in Korea into three stages: (1) business start, (2) business operation and development, and (3) business exit , and summarizes the legal structure, procedures, and strategies to be considered at each stage with a focus on practice. It deals with various investment methods, including company establishment, joint ventures, business acquisitions, stock acquisitions, and third-party contracts, and then comprehensively explains follow-up procedures necessary for business growth and exit, such as capital increase, loan, contract execution, IPO, and exit strategies. In fact, when foreigners invest in Korea, practical constraints, procedural difficulties, and practitioner judgments are often more important than theoretical interpretations or normative principles. Contrary to expectations, such working-level information is difficult to access, and even if advice on such aspect is requested, we are not often provided a clear explanation of the best strategy within the overall investment structure. Therefore, the purpose of this book is to provide a basic structure and practical flow so that foreign investors can first understand the overall structure and use expert advice on it to gain a more strategic approach. FROM the early days of Samsung Electronics' growth in the semiconductor industry through foreign investment TO the recent trend of global companies investing in Korean startups or entering the manufacturing industry, most real-based foreign investment cases can be interpreted as the structure and procedure described in this book. However, this book does not cover an in-depth analysis of complex compliance issues such as corporate governance, anti-money laundering (AML), the Foreign Corrupt Practices Act (FCPA), personal information protection (GDPR, etc.), and international sanctions, and does not include tax law considerations. Special cases centered on derivatives transactions or short-term financial investments are also excluded from the scope of the text. Please note that these areas require separate advice prior to actual investment. I sincerely hope that this book will be a clear guide to foreign investors and all readers who want to understand the practical structure of Korean market investment.