This book examines the principles and practical application of professional ethics, with a special focus on the legal profession. It highlights the importance of ethical conduct in maintaining public trust, professional credibility, and the effective administration of justice. Adopting a case-law-based approach, the book analyses landmark judicial decisions and disciplinary cases that shape standards of professional behaviour. Key topics include professional misconduct, conflicts of interest, confidentiality, integrity, and duties toward clients and courts. Intended for students, practitioners, and researchers, the book blends theory with practice, fostering a deeper understanding of professional responsibility, accountability, and ethical excellence.