This study examines the semantic role of the Toba Batak language's core arguments. The theory used is the macro role. This study uses a qualitative method. The data sources are in the form of spoken text and written text in Batak Toba language. The results showed that the semantic role of the core arguments in the Batak Toba language consisted of macro roles and thematic roles. macro roles consist of actor and undergoer, while thematic roles consist of agent, experiencer, effector, recipient, theme, source, and patient.