The Thrausi (also known as Trausi) were a Thracian tribe that inhabited the southwestern region of the Rhodope Mountains. They are mentioned by ancient historians such as Herodotus and Livy. Herodotus describes the Thrausi as having unique customs related to births and deaths. When a child was born, the Thrausi would weep for the hardships the child would face in life, while they celebrated and rejoiced when someone died, believing that the deceased had been freed from the sufferings of mortal existence.