The purpose of this manuscript is to present a reliable estimate in form of tables of the Muslim population and its percentage in each country in Oceania. This data is summarized to be a reference for other studies and discussions related to Muslim population. The data show that Muslim population in Oceania, both in size and in percentage, remains very low. Accordingly, there are less than half million Muslims in Oceania; that is less than 1.4% of the total population. Muslims remain well under represented in Oceania, although there are substantial minorities in Australia, New Zealand and Fiji. Accordingly, the results of this paper reveal that the percentage of Muslims in Oceania is less than half a million or 1.4% of the total Oceania population. In addition, only 0.03% of the world Muslim population reside in this continent. Our results are summarized in tables and a superscript number is put by a country name representing the source of the percentages. A "(year)" sign is put next to this number to indicate that the source bases its estimate on official census data and the year the census was conducted. Percentage values are based on the latest available census and reliable estimates. Official censuses were considered in this study to be the most reliable; although official censuses are usually challenged by minorities, whether Muslims or not, claiming that their number is underestimated for various reasons. However, these claims tend to be based on emotions and wishful thinking and not on scientific facts. In addition, residents who are not citizens are not counted in many religious and ethnic censuses. While typically non-citizens do not influence the political life in a country, they do help in establishing and maintaining various religious facilities and activities. Thus, it makes sense to include them in an estimate that inquires about adherents of a certain religion in a country. The total population estimate for each country and the corresponding annual population growth rate (APGR) are based on (CIA). An estimate for the Muslims demographics in the Year 2020 is also given based on these growth rates. The next section presents percentage and population of Muslims in Oceania. A summary data and comparison for all continent of the world is presented in the last section. 2. Muslims in Oceania Oceania consists of many island nations in the Pacific Ocean, the total population of which is 35 million. Therefore, it is the least populated continent in the world. The Muslim population in this continent is about half million, or 1.4% of the total population of the continent. The corresponding individual data for each country in Oceania is discussed below and summarized in Table 2. • Australia: Based on census data (UN, UN56, UN73, UN83, UN88, UN93, AU), in 1947 out of 7,579,358 Australian inhabitants, there were 2,704 or 0.04% Muslims.