This paper evaluated the nexus of board composition with the financial performance of the firms listed on PSX. The research specifically considered the case of KSE-30 index and data spanned from 2014 to 2018 which asserts 5 years. The board composition was represented by board size, gender diversity, non-executive directors (NEDs), and board independence controlled by age of firms, financial leverage and firm size. For financial performance, the metrics of ROE and ROA was utilised. The analysis techniques incorporate regression and correlation. In accordance with regression, the influence on NEDs was positive on both ROA and ROE in a significant manner whereas, gender diversity affected them negatively. Besides, board size negatively and board independence positively influenced financial performance but partially. In addition, financial leverage positively and partially controlled the nexus.