All over the world, Kittisak (กิตติศักดิ์ 
, Kittisak 
, กิจติศักดิ์ ) is a common predominantly boy's, but very infrequently feminine forename. The first name Kittisak is habitual in Thailand, where it is quite a common predominantly masculine, but very infrequently female name, and the United States, where it is an extremely rare male name.
| VARIANT | COUNTRY |
|---|---|
| กิตติศักดิ์, กิจติศักดิ์, กิตติศักด์ | Thailand |
| Kittisak | Laos, Austria, United States, Thailand, Myanmar |
กิตติศัก, กิตติสัค, and อักษรกิตติศักดิ์
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kittisak phutchan |
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| kittisak jaihan Thai footballer, TH (b. 1979) |
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| kittisak sawanyawisuth researcher |
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| kittisak ajariyakhajorn researcher |
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| kittisak somsri Thai herpetologist, TH |
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| kittisak buddhachat researcher |
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| kittisak saengsura Ph. D. Universität Potsdam 2009 |
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| kittisak chomprasert researcher (ORCID 0000-0002-8163-1626) |
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| kittisak tanasuwan Thai footballer, TH (b. 1980) |
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| kittisak payapvipapong researcher |
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| kittisak yokthongwattana researcher |
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| kittisak siriwan Thai footballer, TH (b. 1983) |
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| namdash kittisak badminton player, SG (b. 1993) |
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| kittisak moosawat (b. 1989) |
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| kittisak phomvongsa Laotian footballer, LA (b. 1999) |
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Pavo, Nooyoung, Saowaphak, Supradith, Arttanatong, Chaisrisa, Pradubsri, Lerdjantarangkul, Jaroensuk, Tanyannet, Thaninrum, Thamaphiban, Thongthep, Thongyuan, Kanjanawiwin, Kiatsuranon, Thanyawatdechakit, Thammasiri, Vittayakorn, Wongthummawicha, Charoenmark, Khamprasert, Petchuay, Khemkhao, Kongpila, Boonkong, Ayama, Onnom, Mommoh, Sealoo, Keinkham, Panich, Laosuk, Laopim, Jandee, Janmai, Niphatthanin, Tamchu, Suankeaw, Sripong, Chumpan, Kijsaptawee, Pramual, Pholsen, Junpetch, Onsawat, Sukkasem, Chotirat, Sinrujiraputt, and Rattanachaya