Across the world, Siani (Siani 
, سياني 
, סיאני ) is quite a rare gender-neutral forename. The given name Siani is habitual in Cameroon, where it is a rare masculine name, Costa Rica, where it is a rare female name, and Indonesia, where it is a rare largely girly, but infrequently boy's name. Measured by absolute frequency, it is commonest in Indonesia, Cameroon, and India. More frequently, Siani is the last name as well as the forename.