Throughout the world, 尼亚斯 (Nias 
, 尼亚斯 
) is quite a rare unisex forename. The forename 尼亚斯 is characteristic of Indonesia, where it is a rare unisex name, Saudi Arabia, where it is a very rare masculine name, and South Africa, where it is a very rare dominantly male, but uncommonly girly name. Measured by absolute frequency, it is the most numerous in Indonesia, India, and Saudi Arabia. Likewise, 尼亚斯 is the last name as well as the forename.