The ABC axed the service in January, saying it was not viable and too expensive to maintain.
In a letter, Vanuatu's Prime Minister Charlot Salwai said removing the shortwave service to Vanuatu could cost many lives in the likelihood of a major natural disaster, like cyclone Pam two years ago.
The Daily Post said radio broadcasts to remote parts of the country have been cited as a reason the death toll from the category five storms was relatively low.
After the storm there was practically no domestic communication, with shortwave the only radio means to reach a scattered population.
Mr Salwai said it could be reasonably stated that Australia's shortwave service helps save Pacific lives and Australian tax dollars.
Photo: ITU Pictures / R. Farrell The Prime Minister of Vanuatu Charlot Salwai.