This paper describes the behavior of the anaphoric element ta- in Karitiana (Arikém branch, Tupian family) showing that it is a third person anaphor which must be bound (c-commanded and coindexed) by an antecedent in the same sentence. ta- may occur as a possessor clitic attached to a nominal, or as a subject or object clitic attached to a verb. We show with elicited and spontaneous data that the Karitiana anaphor is subject oriented when occurring in embedded environments, being able to refer to the subject of the matrix clause or to the subject of an embedded clause in cases of multiple embedding. We analyze this lexical item as a medium-distance anaphor, following the definition of Reuland and Koster (1991). Logophoric uses of the ta- anaphor are also exemplified and briefly discussed.