Cognomen Hacıoğlu (Hacıoğlu 
, Хаджиоглу 
) , in all the world, is a rare surname. The cognomen Hacıoğlu is characteristic of Cyprus, where it is quite a rare surname, Turkey, where it is a rare surname, and Bulgaria. In absolute terms, it is the most numerous in Turkey, Bulgaria, and Ukraine.
| VARIANT | COUNTRY |
|---|---|
| Hacıoğlu | Cyprus, Germany, Turkey, Spain, Bulgaria |
| Хаджиоглу | Russia, Ukraine, Bulgaria |
| məmmədkəbir hacıoğlu AZ (b. 1906) |
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| muammer hacıoğlu TR (b. 1945) |
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| mehmet hacıoğlu Turkish football manager, TR (b. 1959) |
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| ahmet hacıoğlu Turkish general, TR (b. 1964) |
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| murat hacıoğlu Turkish footballer, TR (b. 1979) |
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| i̇smail hacıoğlu Turkish actor, TR (b. 1985) |
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| burcu tarıkahya hacıoğlu |
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| sercan hacıoğlu Turkish association football player, TR (b. 1992) |
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