This study aims to investigate the impact of corporate social responsibility disclosures (CSRD) on the financial performance of the Islamic banking industry of Pakistan. The study employed the method of content analysis for collecting the required data from annual reports of all four full-fledged Islamic banks operating in Pakistan from 2012 to 2017. The study developed a novel comprehensive CSRD index by using the “Global Reporting Initiative” (GRI) and “Accounting and Auditing Organization of Islamic Financial Institutions” (AAOIFI). This index consists of five dimensions and 105 sub-dimensions of CSRD. The use of Ordinary Least Squares (OLS), Panel Corrected Standard Errors (PCSEs), and Generalized Least Squares (GLS) using random-effect (RE) and fixed-effect (FE) estimators revealed a significant negative relationship between CSRD and the financial performance of the sample firms. Regarding separate dimensions, the relationship of the Environmental and Economic dimensions of CSRD is significantly positive with current performance, but it is insignificant for the relationships of Legal, Philanthropic, and Ethical dimensions of CSRD with the current financial performance. In addition to contributing to the scarce literature in the Islamic banking industry of a developing country like Pakistan, the study will also help the policymakers and other stakeholders, including the AAOIFI, to develop a comprehensive CSRD policy or index and further improve the already established standards for CSRD.