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Across the world, Sweeney (Sweeney , سويني , 斯威尼, among others...) is a rare unisex first name. The first name Sweeney is habitual in British Virgin Islands, where it is quite a common feminine name, Sweden, where it is a rare female name, and Australia, where it is a very rare unisex name. Not in comparison with a country's population, it is commonest in the United States, Philippines, and China. Much more frequently, Sweeney is the last name as well as the forename.
Sweeney is also a name for the fictitious and mythical characters: Sweeney Todd , the Fictional serial killer barber, Sweeney Todd: The Demon Barber of Fleet Street and Brian Sweeney Fitzgerald , the fictional entrepreneur, title character in Fitzcarraldo.