Malaysia's marketplace operates within a framework that combines statutory law, industry codes, and cultural expectations. This chapter offers a practical guide to navigating this area, demonstrating how legal compliance and ethical considerations can be seamlessly integrated into everyday marketing process decisions. The discussion starts by examining the key legal instruments that govern market honesty, data protection, and digital media. These include the Consumer Protection Act 1999, the Trade Descriptions Act 2011, the Personal Data Protection Act 2010 as amended in 2024–2025, the Communications and Multimedia Act 1998, the Malaysian Communications and Multimedia Content Code 2022, and the Competition Act 2010. The chapter then explores the ethical dimension, examining how multicultural and Islamic values, halal integrity, and inclusive representation function both as operational requirements and as factors that shape brand reputation. Digital marketing receives particular attention because issues such as disclosure requirements, children's protection, consent mechanisms, and design ethics have become central to platform-based marketing practice. The chapter, therefore, presents research-based guidance on influencer marketing, anti-spam measures, fair design in consent processes, and the responsible use of AI in personalisation. Promotions and contests are examined in light of the restrictions found in the Common Gaming Houses Act 1953 and the Lotteries Act 1952, with skill-based competitions explained as a legally permissible alternative. Intellectual property is treated as a daily marketing concern, with particular attention given to how trademarks are utilized in digital interfaces, the risk of passing off, and questions of copyright ownership and moral rights in campaign materials.