Language variations refer to regional, social, or contextual differences in the ways that a particular language is used. Every society or ethnic group has its own language patterns and rules that differ from other societies or groups. This thesis focuses on the appearance of language variation in the Batak Toba community based on social structure. Language variations that appear in the Batak Toba community are the result of the existence of a social structure in the Batak Toba, known as Dalihan Na Tolu. This thesis will explain why hula-hula, dongantubu, and boru do not speak in the same way. They have different language characteristic. Boru will not be able to use the language characteristic used by hula-hula or dongantubu, and vice versa. From some of the speech samples that I have been taken and analyzed, there are 29 verses spoken by hula-hula, which contain the giving of blessings, 16 verses spoken by dongantubu, which show cooperation or show a connection and unity with each other, and 16 verses spoken by boru, which show respectful and humble. If the verses used contain blessings, it is certain that the verses comes from hula-hula. If the content of the verses used cooperation or shows a connection and unity with each other, it is certain that the verses are used by fellow dongantubu. If the verses used are respecrful and humble, it is certain that the verses come from boru.