All around the world, โอ้ย (Oi 
, Oai 
, โอ้ย) is quite a common epicene first name. The first name โอ้ย is habitual in Macao, where it is quite a rare female name, Hong Kong, where it is quite a rare predominantly feminine, but very seldom boy's name, and Qatar, where it is a rare masculine name. Not in comparison with a country's population, the name is most common in Indonesia, Hong Kong, and Vietnam. Also, โอ้ย is the last name as well as the forename.