Abstract: Endometrioid Endometrial Carcinoma (EEC) is one of the malignant primary epithelial tumors in the endometrium, a glandular neoplasm that shows acinar, papillary or partially dense configuration and potentially affects the myometrium. Histopathological grading is based on the degree of structural differentiation and cell atypia. BMI is a body mass index calculated by comparing body weight with height, calculated by dividing body weight in kilograms with height in meters squared. The exact cause of EEC is unknown, most of the EEC cases associated with endometrial exposure to chronic estrogen stimulation will cause excessive proliferation resulting in endometrial hyperplasia which is a precursor to the occurrence of EEC. This study used endometrial tissue samples to assess the relationship BMI and histopathological grading of EEC. As many as 31 paraffin blocks fixed by formalin from EEC patients were examined and assessed for histopathological grading. The basic characteristics of the sample are obtained through medical records or pathology archives. the relationship between BMI and histopathological grading EEC was analyzed using SPSS version 22. The results of the analysis showed that there was no significant relationship between BMI and histopathological grading of EEC (p> 0.05).