Family name Thoem (เทิม 
, Thoem 
, เถิม ) , worldwide, is a very rare last name. The family name Thoem is habitual in Denmark, where it is a rare surname, New Zealand, where it is a very rare surname, and Cambodia. In absolute terms, this name is the most popular in Denmark, the United States, and Canada. More frequently, Thoem is the forename as well as the last name.