All over the world, حيدر (حيدر 
, Haider 
, Haidar , among others...) is a prevalent masculine first name. The given name حيدر is habitual in Western Asia, particularly Iraq, where it is a prevalent male name, Syria, where it is a common principally male, but very infrequently girly name, and Lebanon (explore the name in all countries). In absolute terms, it is commonest in Iraq, India, and Pakistan. Very seldom, حيدر is the last name as well as the forename.
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| حيدر | Iran, Yemen, Syria, Sudan, Iraq |
| Haidar, Hayder, Haider, Haydar | Bangladesh, India, Pakistan, Iraq, Turkey |
| Heydar | India, Pakistan, Iraq, Saudi Arabia, Turkey |
| الأفشين بن كاوس حيدر Sogdian Iranian Abbasid general (died 841), IQ (b. 800) |
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| حيدر الحلي Iraqi poet, IQ (b. 1831) |
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حيدر بن عثمان الحجار Saudi Arabian physician, SA (b. 1915) |
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حيدر عيسى مراد مراد JO (b. 1940) |
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حيدر جواد العبادي Iraqi politician and Prime Minister of Iraq, IQ (b. 1952) |
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علي حيدر Syrian politician, SY (b. 1962) |
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حيدر أحمد دفع الله SD (b. 1952) |
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| حيدر عبد الشافي Palestinian activist (1919–2007), PS (b. 1919) |
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حيدر صادق نوري لطيف الملا Iraqi politician, IQ (b. 1969) |
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| حيدر العمر The first Iraqi film director, IQ (b. 1924) |
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| حيدر أبوبكر العطاس Yemeni politician, YE (b. 1939) |
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| حيدر عبد الحق Iraqi television presenter, IQ (b. 1964) |
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| حيدر شياع البراك Iraqi politician and diplomat, IQ (b. 1967) |
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| حيدر السويدي Iraqi linguist, IQ (b. 1967) |
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| شرار حيدر association football player, IQ (b. 1968) |
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علي, الحسيني, البديري, الساعدي, السعيدي, الدراجي, الجبوري, الجنابي, الربيعي, الركابي, الخزعلي, الخفاجي, التميمي, المالكي, الموسوي, المياحي, القريشي, الكناني, الحسناوي, البصراوي, البهادلي, الفتلاوي, العكيلي, المحمداوي, العبودي, العبادي, حسن, احمد, عباس, حسين, محمد, كريم, كاظم, العلي, الطيب, الملك, الحنين, السعدي, الشمري, الاسدي, الطائي, الملكي, الكرار, الكعبي, اللامي, العامري, العراقي, العبيدي, and الكربلائي