The ICANN Technical Liaison Group (ICANN TLG) consists of four organizations:
- European Telecommunications Standards Institute (ETSI),
- International Telecommunications Union's Telecommunication Standardization Sector (ITU-T),
- World Wide Web Consortium (W3C), and
- Internet Architecture Board (IAB).
The purpose of the TLG is to connect the ICANN Board with appropriate sources of technical advice on specific matters pertinent to ICANN's activities. Each TLG organization is entitled to appoint two representatives. The eight TLG representatives are responsible for deciding where to direct a technical question from ICANN when ICANN does not ask a specific TLG organization directly.