Endometriosis is a chronic multi-factorial disease characterized by the presence of functioning uterine glands and stroma in any site outside the uterus. Despite the major public health impact of this condition, little is known about their etiologies. Some studies focused on the similarities between the common biological mechanisms underlying the development of endometriosis and atherosclerotic plaques. So, it is possible to hypothesize that same atherogenic risk factors, such as dyslipidemia may play a role in endometriosis pathogenesis. This case-control study was carried out in the department of Obstetrics and Gynaecology, Bangabandhu Sheikh Mujib Medical University (BSMMU), Dhaka, Bangladesh from September 2018 to August 2019 to investigate the lipid profile in patients with endometriosis and to analyze the association of dyslipidemia with endometriosis. A total of 140 participants ranged between 18 and 35 years of age attending BSMMU were enrolled in the study. The study population was divided into case and control group; the case group consisting of patients with endometriosis and control group comprising of healthy women without endometriosis. Fasting lipid profile of all participants was measured in the department of Biochemistry and Molecular Biology of BSMMU, Bangladesh. Doing student's t-test and Chi square test compared results of both groups. Logistic regression analysis was done to see association of dyslipidemia with endometriosis. Women with endometriosis were found to have significantly higher levels of serum total cholesterol (TC), low density lipoprotein (LDL-C), triglyceride (TG) and significantly lower level of high density lipoprotein (HDL-C) compared to the controls (p<0.05). The mean atherogenic index was significantly higher in case group (p<0.05). This study found an association between dyslipidemia and endometriosis.Women with endometriosis have higher atherogenic index compared to women without endometriosis.