On June 16, 2025, the National Assembly of Vietnam adopted Law No. 75/2025/QH15 amending and supplementing a number of articles of the 2012 Advertising Law, with an effective date of January 1, 2026. The amended Advertising Law was enacted to further refine the legal framework for advertising activities in the modern era. Online Advertising Under the amended Advertising Law, “online advertising” is defined to encompass not only advertising on electronic newspapers and electronic information pages (as provided under the 2012 Advertising Law) but also advertising on other electronic venues, including social media, online applications, and digital platforms with internet connection. The amended Advertising Law also imposes new requirements for online advertising, including: Identification signs: Advertisements must have clear identifiable signs in numbers, letters, symbols, images, or sounds to distinguish them from non-advertising content. Control features: For advertisements not in fixed areas, there must be easily recognizable features and icons that allow recipients to turn off the advertisement, notify the service provider of violating advertising content, and refuse to view inappropriate advertising content. Linked content: Content in the links embedded in advertisements must comply with the law. Advertising service providers and publishers must have measures to check and monitor the linked content. Advertising on social media: Organizations and enterprises providing social media services must offer users features to distinguish advertising content from other content. Signage for sponsored content: When advertising, users of social media services must use signs to differentiate advertising or sponsored content from other content they provide. In response to the above requirements for online advertising, the amended Advertising Law sets out obligations of advertisers, advertising service providers, advertising publishers, and advertising conveyers in relation to online advertising. Among these, it is notably the responsibility of individuals and organizations engaging in online advertising to prevent and remove violating