The following countries are considered part of the Muslim world:
In Southeast Asia: 12 States
Saudi Arabia, Iran, Iraq, Syria, Lebanon, Yemen, Oman, United Arab Emirates, Bahrain, Qatar, Jordan and Kuwait
In Central Asia: 7 States
Turkey, Azerbaijan, Kazakhstan, Turkmenistan, Tajikistan, Kyrgyzstan and Uzbekistan
In South Asia: 4 states
Pakistan, Bangladesh, Maldives and Afghanistan
In Southeast Asia: 3 States
Indonesia, Malaysia, Brunei
In North Africa: 5 states
Egypt, Libya, Tunisia, Algeria and Morocco
In West Africa: 8 states
Mali, Senegal, Gambia, Guinea, Guinea-Bissau, Burkina Faso, Sierra Leone and Nigeria
In Northeast Africa: 4 states
Sudan, Eritrea, Djibouti and Somalia
In Southern Africa: 1 state
comoros
In the Balkans: 3 states
Bosnia, Albania and Kosovo
Therefore, 47 countries are classified as part of the Muslim world.