This study investigatesthe types of grammatical cohesion and the frequency of grammatical cohesionin the short story “Tanya’s Reunion” By Valarie Flournoy. The study investigation is based onHasan and Halliday theory of Grammatical Cohesion. This study employs a descriptive qualitative method.The data of this study were taken from the short story entitled “Tanya’s Reunion” in the forms ofwords, phrases, clauses, and sentences.In this study, the researcher is the key instrument who interprets the data. The result of the analysis shows that grammatical cohesion found in the short story “Tanya’s Reunion” are reference – personal reference, demonstrative reference, and comparative reference; substitution – nominal substitution and verbal substitution; ellipsis – nominal ellipsis, verbal ellipsis, and clausal ellipsis; and conjunction – additive conjunction, adversative conjunction, causal conjunction, and temporal conjunction, meanwhile, clausal substitution is not found in this short story.