Electronic Transactions Act (ETA): Primary legislation governing electronic contracts and transactions in Singapore. Ensures legal recognition of electronic records and signatures, which is crucial for online advertising contracts.

Personal Data Protection Act (PDPA): Key legislation regulating the collection, use, and disclosure of personal data in Singapore. Critical for targeted advertising and user data collection practices in website advertising.

Singapore Code of Advertising Practice (SCAP): Industry self-regulatory code providing guidelines for ethical advertising practices and ensuring truth and honesty in advertising claims.

Broadcasting Act and Internet Code of Practice: Regulatory framework for internet content providers, setting content standards and restrictions, including specific advertising guidelines for online platforms.

Consumer Protection (Fair Trading) Act: Legislation protecting consumers against unfair practices and ensuring truthful advertising, particularly relevant for B2C advertising relationships.

Competition Act: Law preventing anti-competitive practices, particularly relevant for exclusive advertising arrangements and market competition in the advertising space.

Copyright Act: Legislation protecting intellectual property rights, crucial for advertising content and creative works used in website advertising.

Spam Control Act: Legislation regulating electronic marketing messages and communications, particularly relevant if advertising includes email marketing components.