Martin Tete will represent Vanuatu on the team.
A former Solomon Islands prime minister, Sir Francis Billy Hilly will lead the observer team.
Other members are former Fiji president, Ratu Epeli Nailatikau, and Phillipe Ajapunya a member of the political bureau of the FLNKS in New Caledonia.
The MSG was invited to send a team at the invitation of the PNG government.
Polling is scheduled to begin June 24 and end on July 8.