Introduction: Despite the increasing interest in sex differences in acute coronary syndrome (ACS) presentation, management, and outcomes in high-income countries, reports on such differences from low- and middle-income countries (LMICs) are limited. Limited resources in LMICs may worsen health disparities experienced by women and vulnerable populations.Methods: Using ACS QUIK trial database, we examined sex-differences in terms of baseline characteristics, management received, and relevant clinical outcomes of 21,374 patients presenting with ACS. The main outcomes were the rates of in-hospital and 30-day composite of death, reinfarction, stroke, and major bleeding. We fitted log Poisson multivariate random effects models to obtain the relative risks comparing females to males. We used random intercepts for different hospitals and centers as the clustering variable. Effect measure modification by baseline variables was examined by restricting the analysis to each category and comparing the effect estimates for females to males.Results: A total of 5,191 (24.3%) patients were women. Compared to men, women presenting with ACS were older (65±12 vs 58±12 years; p < 0.001), more likely to have hypertension (61.2% vs 42.4%; p < 0.001), and diabetes mellitus (53.5% vs 41.4%; p < 0.001). After symptom onset, women tended to present later to the hospital (medians, 300 vs 238 mins; p < 0.001) and had higher Killip class on presentation (17.8% vs 12.3%; p < 0.001). Women presenting with STEMI were less likely to receive primary PCI (45.9% vs 49.8% of men, p <0.001) and had longer median door-to-balloon times (medians, 90 vs 80 mins for men; p <0.001). Compared to men, women were 53% more likely to experience in-hospital MACE (adjusted RR = 1.53; 95% CI, 1.32-1.77; p<0.001), and 39% higher risk of 30-day MACE (adjusted RR = 1.39; 95% CI, 1.65-2.07, p <0.001).Conclusion: In summary, our study confirms a higher CVD risk profile, delayed presentation, suboptimal medical care in women presenting with ACS in Kerala, India. Women were also found to have higher in-hospital and 30-day MACE, even after adjustment for potential confounders.