A Global VLBI Alliance (GVA) to facilitate the flow of information between VLBI networks, including sharing strategies, technical developments for compatibility, logistics, operations, and user support.

- European VLBI Network (EVN) [http://www.evlbi.org/]
- East Asia VLBI Network (EAVN) [https://radio.kasi.re.kr/eavn/]
- NRAO Very Long Baseline Array (VLBA) [https://science.nrao.edu/facilities/vlba]
- Australian Long Baseline Array (LBA) [https://www.atnf.csiro.au/vlbi/overview/index.html]
- Global Millimeter VLBI Array (GMVA) [https://www3.mpifr-bonn.mpg.de/div/vlbi/globalmm/]

- Global VLBI Alliance (v1)