Background: Endometriosis is a chronic inflammatory condition affecting women of reproductive age, with a notably higher prevalence in those experiencing infertility. Given this association, the study aimed to assess how socio-demographic and clinical factors relate to the severity of endometriosis based on laparoscopic findings in infertile women. Aim of the study: The aim of the study was to evaluate the association between socio-demographic and clinical factors with the severity of endometriosis based on laparoscopic evaluation in infertile women. Methods: This cross-sectional study was conducted in the Department of Obstetrics and Gynaecology at CARE, BIRDEM General Hospital, Dhaka (July 2013-June 2015) involving 127 infertile women. Data were collected regarding sociodemographic characteristics and clinical factors using a structured data collection sheet. BMI was calculated from weight and height and included in the data collection sheet. Laparoscopic diagnosis and staging used the Revised American Fertility Society criteria. Data analysis employed SPSS 20 (descriptive statistics, t-tests, chi-square tests). Results: In a study of 127 infertile women, Stage I endometriosis was most common, with Stage IV less frequent. Older age was linked to Stage I (p=0.016), and upper-class women had a higher prevalence (p=0.003). Lower BMI was associated with Stage IV (p=0.043). Severe stages, especially Stage IV, were significantly linked to dysmenorrhoea, menorrhagia, dyspareunia, and chronic pelvic pain. Conclusion: Socioeconomic background, age, BMI, and symptom profiles may serve as valuable indicators of endometriosis severity in infertile women undergoing laparoscopic evaluation.