I don't know all but I know some.
Egypt, Sudan, Syria, Turkey, Morocco, Azerbaijan, United Arab Emirates, Oman, Lebanon...
additional answer:
The biggest Muslim countries (with majority number of Islam practising population) are:
Indonesia, Pakistan, Bangladesh
56 country of muslim name
mecca
It means Muslims of the countries with Muslim majority population (around 50 countries).
Most Muslim countries report 99-100% of their population is Muslim. The countries with the largest Muslim population are Indonesia, Pakistan, and India, even though they are 88, 95, 13.5% Muslim, respectively.Countries that report being 100% Muslim are: Saudi Arabia & Somalia, with Afghanistan, Maldives, and Turkey reporting above 99% but below 100%.
Indonesia.
tehran
Name of Muslims country
Asia has the largest Muslim population
About 50 countries have a muslim majority population
there are many non muslim countries .USA, UK ,CHINA, SPAIN, INDIA, FRANCE, JAPAN, RUSSIA and many more
Only Albania and Kosovo have the majority of the population being Muslim.
Pakistan occupies a key position for its high Muslim population and its borders with many other Islamic countries.
list of Muslim countries with percentage of Muslim population higher than 80% (81% to 99.7%)AfghanistanTunisiaIranWestern SaharaAzerbaijanMauritaniaYemenMoroccoIraqNigerSomaliaMaldivesComorosJordanTurkeyAlgeriaPalestineSaudi ArabiaDjiboutiLibyaPakistanUzbekistanSenegalKuwaitGambiaEgyptTurkmenistanMaliSyriaKosovoBangladeshIndonesiaOmanKyrgyzstanGuineaTajikistanBahrain