Christianity is the majority religion in the Montenegro and 76% of the population follow Christianity. Eastern Orthodox Christianity is the dominant religion in Montenegro. Adherents of Eastern Orthodoxy in Montenegro are predominantly ethnic Montenegrins and Serbs. 72% of Montenegro  population follow Eastern Orthodox and rest 3.86% are catholic, protestants, etc.

Muslims form the largest minority religion in the country. Montenegro’s 118,477 Muslims make up 19.11% of the total population. Montenegro has the sixth-highest proportion of Muslims in Europe, after Kosovo (96%), Turkey (90%), Albania (60%), Bosnia and Herzegovina (51%), and North Macedonia (34%), and the third highest proportion among Slavic countries, behind only Bosnia and Herzegovina and North Macedonia.

Muslims in Montenegro are divided into two main groups, and further subgroups: Bosnian-speaking ethnic Bosniak Muslims, Montenegrin-speaking ethnic Montenegrin Muslims, Other Slavic Muslims,  Albanian-speaking ethnic Albanian Muslims and Romani people.

3.31% people do not affiliate with any religion or irreligious and other religion are at 1.55%.

Religion percentage in Montenegro

• Christianity – 75.93% 
  — 72.07% Eastern Orthodoxy
  — 3.86% Other Christian
•  Islam – 19.21%
• No religion – 3.31% 
•  Others – 1.55%

Source: Wikipedia