Top 10 Countries with the Highest Percentage of Muslims

Islam, the world’s second-largest religion, boasts over 2 billion followers globally as of 2025, representing about 25% of the planet’s population. This growth isn’t just numerical; it’s fueled by youthful demographics, high birth rates, and a deep-rooted sense of community that extends to every facet of society, including food production and consumption. Halal principles—ensuring food is permissible under Islamic law—aren’t merely dietary rules; they’re a holistic approach to sustainability, animal welfare, and ethical sourcing that resonates even beyond Muslim communities. In countries where Muslims form the overwhelming majority, Halal isn’t an option; it’s the norm, shaping local cuisines, export industries, and even tourism. Drawing from reliable sources like World Population Review and Pew Research Center, let’s explore the top 10 countries where Muslims make up the largest share of the population. These rankings are based on the latest available estimates, typically from 2017-2023 data projected to 2025, accounting for population growth and migrations.

Top 10 Countries with the Highest Percentage of Muslims

Starting with the nations where Islam is virtually universal, these countries exemplify how faith intertwines with culture, economy, and daily routines. I’ll highlight each one’s unique story, including their contributions to the Halal food sector, which is projected to reach $2.6 trillion by 2028. This isn’t just about numbers—it’s about the people, flavors, and opportunities they represent.

1. Maldives (100% Muslim)
   Nestled in the Indian Ocean, this archipelago paradise of over 1,000 coral islands is home to about 375,000 people, all of whom identify as Muslim. Islam arrived here in the 12th century via Arab traders, and today, it’s enshrined in the constitution as the state religion. The Maldives’ pristine beaches and luxury resorts might steal the spotlight, but its Halal food scene is equally enchanting. Seafood dominates, with fresh tuna and reef fish prepared in coconut-infused curries that adhere strictly to Halal standards. As a senior Halal industry observer, I’ve noted how the country’s tourism boom has amplified demand for certified Halal products, making it a key market for exporters. Challenges like climate change threaten fisheries, but innovative aquaculture is rising to meet them, ensuring Halal-compliant sustainability.
2. Mauritania (99.89% Muslim)
   In West Africa, Mauritania’s 4.2 million residents live in a vast desert landscape where Islam has been the unifying force since the 8th century. With nearly 4.16 million Muslims, the country blends Arab-Berber and sub-Saharan African influences. Its cuisine reflects this diversity—think camel milk tea, thieboudienne (a rice and fish dish), and dates harvested from oases, all prepared Halal. Mauritania’s role in the Halal industry is growing, particularly in livestock exports to the Middle East. However, issues like food insecurity due to droughts highlight the need for resilient Halal farming practices, which I’ve advocated for in industry forums.
3. Somalia (99.8% Muslim)
   Somalia, on the Horn of Africa, has a population of around 11 million, with about 10.98 million Muslims. Despite decades of conflict, Islam remains a cornerstone, introduced in the 7th century as one of the earliest adopters outside Arabia. Somali food is hearty and nomadic-inspired: camel meat stews, injera flatbread, and spiced teas, all inherently Halal. The diaspora has globalized these flavors, boosting Halal markets in places like the U.S. and Europe. Rebuilding efforts are focusing on agriculture, and as someone who’s tracked Halal trends, I see immense potential in Somalia’s organic livestock sector once stability improves.
4. Afghanistan (99.7% Muslim)
   With 37.1 million people and 37 million Muslims, Afghanistan’s rugged terrain has nurtured a resilient Islamic heritage since the 7th century. Afghan cuisine features pilafs, kebabs, and mantu dumplings, using local lamb and fruits like pomegranates— all Halal by default. The country’s pistachio and saffron exports are Halal goldmines, but ongoing conflicts disrupt supply chains. From my experience, investing in Afghan Halal agribusiness could foster peace and prosperity, aligning with global demands for ethical sourcing.
5. Yemen (99.07% Muslim)
   Yemen’s ancient history as the “Arabia Felix” includes early Islamic conversions, with 26.78 million Muslims out of 27 million people. Its food culture shines in dishes like mandi (slow-cooked meat and rice) and honey-sweetened pastries, rooted in Halal traditions. Yemen’s coffee and honey are premium Halal exports, though civil unrest has hampered growth. Persuading investors to support Yemen’s Halal sector could revive its economy, as I’ve seen similar revivals in other regions.
6. Iran (99.4% Muslim)
   Iran’s 83 million people include 82.5 million Muslims, predominantly Shia, since the 7th-century conquest. Persian cuisine is a Halal masterpiece: saffron rice, kebabs, and stews like ghormeh sabzi. As a Halal expert, I’ve marveled at Iran’s self-sufficient food industry, exporting pistachios and dates worldwide. Sanctions pose challenges, but its innovation in Halal biotech is inspiring.
7. Western Sahara (99.4% Muslim)
   This disputed territory has 603,000 people, with 599,633 Muslims. Influenced by Sahrawi nomads, Islam here dates back centuries. Cuisine includes couscous and camel products, all Halal. Phosphate mining dominates, but fisheries offer Halal potential amid political uncertainties.
8. Algeria (99% Muslim)
   North Africa’s Algeria boasts 43.74 million Muslims in a 44.2 million population, with Islam arriving in the 7th century. Dishes like couscous and tagines are Halal staples. Its olive oil and dates fuel the Halal market, and as I’ve written before, Algeria’s young entrepreneurs are modernizing traditional recipes for global appeal.
9. Morocco (99% Muslim)
   Morocco’s 36.74 million people include 36.37 million Muslims, blending Berber and Arab roots since the 8th century. Iconic tagines, pastillas, and mint tea define its Halal cuisine. Tourism and exports make Morocco a Halal hub—I’ve tasted the authenticity in its medinas, convincing me of its pivotal role.
10. Iraq (98% Muslim)
    Rounding out the list, Iraq has 39.65 million Muslims in 40.5 million people, with ancient Mesopotamian ties to early Islam. Foods like dolma and kebabs are Halal favorites. Oil wealth supports food imports, but local dates and grains hold promise for Halal expansion despite instability.

Why These Countries Matter for the Halal Food Industry and Beyond

Beyond demographics, these nations are crucibles for Halal innovation. In a world where consumers increasingly seek ethical, traceable food, their markets offer vast opportunities—from organic dates in Mauritania to seafood in the Maldives. However, challenges like political instability, climate change, and economic disparities must be addressed. As a veteran in this field, I believe fostering trade partnerships and sustainable practices here can benefit everyone, promoting cultural exchange and economic growth. If you’re in the food business, consider these countries for sourcing or expansion; for travelers, they’re gateways to authentic Halal experiences.

In conclusion, the top 10 countries with the largest percentage of Muslims aren’t just statistics—they’re vibrant societies where faith, food, and culture converge. By understanding them, we gain insights into a global community that’s shaping our shared future. Whether for business, curiosity, or cuisine, exploring these nations enriches us all.