Surname Nicolau (Nicolau 
, Νικόλαος 
, ニコラ 
, and others...) , in all the world, is a common last name. The surname Nicolau is habitual in Portugal, where it is quite a common surname, Romania, and Angola (explore the name in all countries). In absolute terms, it is the most numerous in Brazil, Angola, and Romania. Also, Nicolau is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Nicolau | Portugal, Angola, Spain, Brazil, Romania |
| Νικόλαος | Greece |
| ニコラ | Japan |
| Николау | Ukraine, Russia, Kazakhstan |
| ניקולאו | Israel |
Miklos, Miklós, Mikola, Mikołaj, Mikuláš, Mykola, Mykoła, Niccolò, Nicholas, Nicolaas, Nicolae, Nicolao, Nicolas, Nicolaus, Nicolaú, Nicolás, Nicoláu, Nicos, Niels, Niko, Nikola, Nikolai, Nikolai, Nikolaj, Nikolaj, Nikolajus, Nikolao, Nikolaos, Nikolas, Nikolass, Nikolaus, Nikolay, Nikolaz, Nikolaï, Nikos, Nikołaj, Nils, Nyikolaj, Νίκολας, Νίκος, Νικολάου, Νικόλας, Коля, Миклош, Микола, Миколай, Микулаш, Мыкола, Мікалай, Міклаш, Мікола, Никколо, Нико, Никола, Николае, Николаев, Николаз, Николай, Николаос, Николас, Николаус, Николаэ, Николо, Николя, Никос, Нилс, Нильс, Ницолау, Нікалас, Нікало, Ніколай, Ніколас, Нільс, נילס, ניקולאי, ניקולס, ميخائيل, نيقولا, نيقولاس, نيقولاي, نيكوس, نيكولا, نيكولاس, نيكولاي, نيلز, نيلس, ნიკოლასი, ნიკოლოზ, ニコ, ニコライ, ニコラウス, ニコラス, ニルス, 尼克斯, 尼古, 尼古拉, 尼古拉斯, 尼古拉耶夫, 尼尔斯, 尼柯, 尼科, and 니콜라
| jaume pere d'aragó i nicolau Illegitimate Son of Peter III the Great, King of Aragon and Sicily (b. 1258) |
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| guillem nicolau Spanish writer and translator, ES (b. 1400) |
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teresa nicolau parody Spanish painter (1817-1895), ES (b. 1817) |
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| dòmenec nicolau Spanish painter (b. 1802) |
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antoni nicolau Catalan conductor and composer, ES (b. 1858) |
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ștefan gh. nicolau Romanian physician, RO (b. 1874) |
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lluís nicolau d'olwer Spanish politician, MX (b. 1888) |
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alexandru nicolau Romanian politician, RO (b. 1889) |
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miquel nicolau faura ES (b. 1880) |
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ștefan s. nicolau Romanian physician (1896-1967), RO (b. 1896) |
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| vicente nicolau cotanda Spanish painter, ES (b. 1852) |
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| josé nicolau huguet Spanish painter, ES (b. 1855) |
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| francesc torrens nicolau (b. 1856) |
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mateo nicolau Argentine footballer (1920-2005), AR (b. 1920) |
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| stephan gh. nicolau (1874-1970) (b. 1874) |
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