The baby name Sidnei is a Male name , 2 syllables long and is pronounced {'Portuguese': '/siˈdnej/', 'English': '/ˈsɪdni/', 'respelling': {'Portuguese': 'see-DNEY', 'English': 'SID-nee'}}.
The baby name Sidnei is a Male name , 2 syllables long and is pronounced {'Portuguese': '/siˈdnej/', 'English': '/ˈsɪdni/', 'respelling': {'Portuguese': 'see-DNEY', 'English': 'SID-nee'}}.
Sidnei is in Origin.
Sidnei is the Portuguese masculine form of Sidney/Sydney, a transferred English surname that traces to an Old English place-name: sīd “broad, wide” + ēg “island, riverside meadow,” yielding the sense “wide island” or “broad riverside meadow.” The -ei ending reflects Portuguese spelling of the final vowel. Related forms include Sidney (English/French), Sydney (English, often unisex), and the rarer Sidny; Portuguese feminines are Sidnéia and Sidneia. Nicknames commonly used are Sid and Ney.
As a given name, Sidney gained currency in Britain from the 18th century, influenced by the distinguished Sidney family (notably the poet Sir Philip Sidney) and later by Viscount Sydney, whose title named the Australian city. The spelling Sidnei arose and spread in Brazil in the mid-20th century and remains largely masculine there, with steady use across sports and popular culture. The name blends old-world pedigree with a friendly, modern profile.
Based on birth registration data from national statistics agencies.
| Country | Gender | Year | Rank | Born | of |
|---|---|---|---|---|---|
| BR | Boys | 0 | #130 | 3,177 | 12,213 |
| AO | Boys | 0 | #249 | 1 | 5,568 |
| PT | 0 | #250 | 1 | 4,161 | |
| BR | 0 | #252 | 95 | 5,969 | |
| JP | Boys | 0 | #277 | 21 | 7,909 |
| CN | Boys | 0 | #331 | 1 | 9,639 |
| PT | Boys | 0 | #345 | 23 | 7,951 |
| MU | Boys | 0 | #368 | 2 | 8,477 |
| UY | Boys | 0 | #411 | 3 | 5,922 |
| BO | Boys | 0 | #622 | 1 | 9,244 |
| QA | Boys | 0 | #743 | 1 | 18,093 |
| BR | Girls | 0 | #881 | 61 | 12,708 |
| United States | Girls | 2012 | #910 | 6 | 9,635 |
| CL | Girls | 0 | #915 | 1 | 14,098 |
| PE | Boys | 0 | #926 | 1 | 14,506 |
| AE | Boys | 0 | #1,143 | 1 | 22,615 |
| CO | Girls | 0 | #1,151 | 2 | 16,140 |
| ZA | Boys | 0 | #1,272 | 1 | 25,619 |
| IT | Boys | 0 | #1,452 | 20 | 10,046 |
Sidnei is popular in 16 countries — most recent births per country:
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