Google Maps™ Driving Directions (Home) » Glossary » Group of 9 Group of 9Last modified by Driving Directions on 01/30/2021 The Group of 9 (G-9) was formed to discuss mutual interest matters on an informal basis. The G-9 members are Austria, Belgium, Bulgaria, Denmark, Finland, Hungary, Romania, Serbia, Sweden. Related Entries Euro-Atlantic Partnership Council European Bank for Reconstruction and Development Australia Group Community of Democracies EU