Family name ธรณี (Earth 
, Derni 
, ธรณี 
) , around the world, is quite a rare last name. The surname ธรณี is habitual in Bahrain, where it is quite a rare surname, Trinidad and Tobago, and Algeria, where it is a rare surname. Measured by absolute frequency, it is commonest in Indonesia, Algeria, and Thailand. Likewise, ธรณี is the forename as well as the last name.