Around the globe, Сьерра (Sierra 
, Сьерра 
) is a common female first name. The first name Сьерра is characteristic of Guam, where it is quite a common feminine name, the United States, and New Zealand, where it is quite a rare female name. In absolute terms, the name is most common in the United States, Indonesia, and Canada. More frequently, Сьерра is the last name as well as the forename.
Сьерра is also a name for the fictitious and mythical characters: Sierra , the fictional character in Dollhouse; Sierra , the character from 2008 film 'Camp Rock'; Sierra , the character from 2015 film 'Bad Hair Day'; Sierra Ripoche and Sierra Esteban , character in As the World Turns.