In the entire world, Hirini (Hirini 
) is a very rare epicene first name. The forename Hirini is habitual in Southern Asia, particularly India, where it is an extremely rare feminine name. Likewise, Hirini is the last name as well as the forename.
Hirini is also a name for the fictitious and mythical characters: Sydney Bristow , the fictional character in the television series Alias; Sydney Carton , the Fictional character in Charles Dickens' novel A Tale of Two Cities; Sydney Fox , the fictional character, Relic Hunter; Sydney Andrews , the soap opera character, Melrose Place and Sydney Cooke , the television character on 'Walker, Texas Ranger'.