Worldwide, ธิยากรณ์ (ธิยากรณ์ 
) is a very rare largely girly, but seldom boy's first name. The first name ธิยากรณ์ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare dominantly girly, but uncommonly male name. Also, ธิยากรณ์ is the last name as well as the forename.