This is a list of countries whose national flags depict crescents, which is the main symbol of Islam.

• {{flagicon|Algeria}} Algeria - a red crescent and star
• {{flagicon|Azerbaijan}} Azerbaijan - a white crescent moon
• {{flagicon|Brunei}} Brunei - a red crescent moon
• {{flagicon|Comoros}} Comoros - a white crescent moon and five stars
• {{flagicon|Croatia}} Croatia - a white crescent moon and a yellow star
• {{flagicon|Iran}} Iran - red crescent moons
• {{flagicon|Libya}} Libya - a white crescent moon and star
• {{flagicon|Malaysia}} Malaysia - a yellow crescent moon
• {{flagicon|Maldives}} Maldives - a white crescent moon
• {{flagicon|Mauritania}} Mauritania - a yellow crescent moon
• {{flagicon|Mongolia}} Mongolia - a yellow crescent moon
• {{flagicon|Northern Cyprus}} Northern Cyprus - a red crescent moon and star
• {{flagicon|Pakistan}} Pakistan - a white crescent moon and star
• {{flagicon|Singapore}} Singapore - a white crescent moon and five stars
• {{flagicon|Tunisia}} Tunisia - a red crescent moon and star
• {{flagicon|Turkey}} Turkey - a white crescent moon and star
• {{flagicon|Turkmenistan}} Turkmenistan - a white crescent moon and five stars
• {{flagicon|Uzbekistan}} Uzbekistan - a white crescent moon and twelve stars
• {{flagicon|Western Sahara}} Western Sahara - a red crescent moon and star

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