Do all the countries in Oceania speak English?

No. Three island groups are influenced by croissants. New Caledonia, Wallis, and Tahiti do not have English as a national language. Their colonial influence was France, so they speak French as a second language. France tried, unsuccessfully, for a Nouvelle Zélande, too. read more

^1 The population figures are based on the sources in List of countries by population, with information as of 23 January 2009 (UN estimates, et al.), and refer to the population of the country and not necessarily to the number of inhabitants that speak English in the country in question. read more