Last name Lourenço (Lourenço 
, Laurentius 
, Лоуренсу 
) , all over the world, is a common cognomen. The cognomen Lourenço is habitual in Portugal, where it is a common surname, Angola, where it is quite a common surname, and Luxembourg. Measured by absolute frequency, it is commonest in Angola, Portugal, and Brazil. Likewise, Lourenço is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Lourenço | Portugal, Brazil, Angola, France, Mozambique |
| Laurentius | Brazil, Sweden, United States, Indonesia, Germany |
| Лоуренсу | Russia |
Lars, Laurance, Laurence, Laurent, Lawrence, Llorenc, Llorenç, Lorenz, Lorenzo, Lourenco, Lourenso, Luregn, Lőrinc, Лаврентий, Лаврентій, Ларан, Ларс, Ловренс, Лоран, Лоренс, Лоренсо, Лоренц, Лоренцо, Лоуренс, לורנס, לורנץ, لارس, لوران, لورانس, لورنس, لورينزو, ラース, ロレンス, ローラン, ローレンス, 劳伦斯, 勒林, 勞倫斯, 拉尔斯, and 拉斯
| lourenço gonçalves de abreu (b. 1100) |
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| lourenço viegas de ribadouro (b. 1110) |
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| lourenço fernandes da cunha Portuguese nobleman (b. 1145) |
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| lourenço soares de ribadouro Lord of Fontelo, Vila Cova, Fonte Arcada and Caria, PT (b. 1200) |
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| vasco lourenço da cunha Portuguese nobleman (b. 1210) |
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| lourenço rodrigues de abreu (b. 1210) |
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| lourenço soares de valadares Portuguese politician, PT (b. 1230) |
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| lourenço martins do amaral (b. 1230) |
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| lourenço martins da cunha Portuguese nobleman (b. 1250) |
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| lourenço roiz da fonseca (b. 1250) |
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| lourenço e. de formoselha (b. 1279) |
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| martim lourenço da cunha Portuguese nobleman, 1st Lord of Pombeiro, during The Kingdom of Portugal (14th c.), PT (b. 1300) |
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| lourenço gomes de abreu (b. 1290) |
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| lourenço vasques cardoso (b. 1300) |
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| teresa lourenço mistress of Peter I of Portugal, PT (b. 1330) |
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