This study aimed to analyzing spatial concentration patterns of diabetes in Sultanate of Oman in (2010-2017) for Omani people who are aged more than 20 years old by using Spatial Analysis and mathematical equations namely: Raw Rate, Excess Rate and Bayes Rate. The study also focused on the geographical and environmental dimensions that influence the spread of diabetes in the wilayats of the Sultanate of Oman. The results of the study showed the type of spatial concentration patterns of diabetes in Sultanate of Oman in 2010 and 2017 were clustered and random respectively. The results showed a wide variation in the distribution of the diabetes among the wilayats of the Sultanate during the study period. For example, the results of the general rate (Raw Rate) indicated that the highest raw rate of diabetes for the year 2010 was in Ibra state by 0.087, and the lowest rate in the state of Al Mazyona by 0.006 but in 2017 highest rate in (Raw Rate) was in Sunainah by 0.139, and the lowest rate was in Rakhyut by 0.016. The highest rate in (Excess Rate) was in Ibra in 2010 by 1.835, and the lowest rate was in Al-Mazyona by 0.145. In 2017 the highest rate using (Excess Rate) was in Al-Suninah by 1.881, and the lowest rate in Rakhyut by 0.221.On the other hand the results of the Bayes spatial rate were somehow different: in that Ibra had the highest rate of 0.086 in 2010, and Muscat in 2017 with a rate of 0.114. The lowest rate was in 2010 was in Al Mazyona at 0.008 and Rakhyut at a rate of 0.021 in2017. The most geographical factors that causes spread of diabetes are illiteracy ز Urbanization. Illiteracy was 23% in Ibra in 2010, and 18% in Sunainah in 2017.Also, urbanization was 100% in Muscat and Muttrah in 2010, and 100% in Sunainah in 2017.In addition, the most important biological causes of diabetes among Omanis are blood pressure and cholesterol and a number of behavioral factors including lack of physical activity, and have not sufficient daily amounts of vegetables and fruits.