Rodi or Rodiya (lit., filth) are an untouchable social group or caste amongst the Sinhalese people of Sri Lanka.

[1] Their status was very similar to all the Untouchable castes of India with segregated communities, ritualised begging, economically weakest section of the society.

[3] Rodiyas were not permitted to cross a ferry, to draw water at a well, to enter a village, to till land, or learn a trade, as no recognised caste could deal or hold intercourse with a Rodiya [...] They were forced to subsist on alms or such gifts as they might receive for protecting the fields from wild beasts or burying the carcasses of dead cattle; but they were not allowed to come within a fenced field even to beg [...] They were prohibited from wearing a cloth on their heads, and neither men nor women were allowed to cover their bodies above the waist or below the knee.

[6] Robert Knox (sailor) and Hugh Nevill are two of the prominent writers who have mentioned the Rodi Caste in their writings.

Although these folklore tales do not provide many facts about the origins of the Rodi, they trace a connection between the daughter of King Parakramabahu and a butcher.