Globally, Сиднеы (Sidney 
, Sydney , Сиднеы 
) is a widespread dominantly masculine, but uncommonly female first name. The forename Сиднеы is characteristic of New Zealand, where it is quite a common primarily boy's, but very infrequently girly name, Curacao, where it is quite a common masculine name, and Brazil (explore the name in all countries). Measured by absolute frequency, the name is most common in the United States, Brazil, and the Democratic Republic of the Congo. Much less frequently, Сиднеы is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Sydney, Sidney | Zambia, South Africa, Brazil, United States, Democratic Republic of the Congo |
| Сиднеы | Russia |
Сиднеы is also a prevalent name for the fictitious and mythical characters: Sid , the Ice Age character, Ice Age: Collision Course; Sydney Bristow , the fictional character in the television series Alias; Sydney Carton , the Fictional character in Charles Dickens' novel A Tale of Two Cities; Sid Jenkins , the character in Skins and Sid Phillips , the Toy Story character, and in many other works.