Background: Polygamy stays one of the key themes in a different social order. It is through social practices, convictions and the people’s decisions that individuals choose to be focused on polygamy ways of life. Objective: To highlight the prevalence and associated factors of polygamous marriages among men in Pakistan. Methods: The current study analyzes the secondary data of PDHS (Pakistan Demographic & Health Survey). This survey was done in Pakistan from November-2017 to April-2018. The study selected cases of 3145 men, which were married once or more than once and other factors from obtained data to find association. Statistical software SPSS version 22 was used for data analysis. Results: Data were retrieved from 3145 men but a complete analysis was done on 3070 men (remaining were excluded due to missing data issues). The average age among men was 32 ± 8.6 years. Majority belonged to rural area (55.5%), with high standard education (55.4%), high wealth status (55.6%), and desire for more children (53. 3%), had child mortality issue (52.2%) and had their workplace away from not close to home (52.2%). Out of 3070 men, 51.8% were polygamous. On multivariate analysis, age, residence, education, wealth, desire for more children, child mortality issue and work status were found to be independent predictors of polygamy. Conclusion: Using the PDHS data, we have found that the prevalence of polygamy was 51.8%. However, different socio-demographic factors affecting it showed significance like wealth index, husband work away & husband desire for more children positively contributing polygamous marriages in Pakistani society.