Surname Thidi (Thidi 
, ที่ดี) , worldwide, is a very rare cognomen. The family name Thidi is characteristic of Myanmar, where it is a rare surname, Malaysia, where it is a very rare surname, and South Africa, where it is an extremely rare surname. Measured by absolute frequency, it is the most numerous in Myanmar, India, and Malaysia. Likewise, Thidi is the forename as well as the last name.