The paper develops a framework to explore the risk disclosure practices of 29 Islamic banks operating in the Gulf Cooperation Council countries over the period of 2013-2016 and examines the potential factors which might be affecting risk disclosure. To analyze the level of risk disclosure, the paper develops a composite index by using the content analysis technique. We also employ OLS technique to examine factors affecting Islamic banks’ risk disclosure. The results indicate a very high difference in risk disclosure between countries. Only two countries, the United Arab Emirates and Bahrain, have a higher level of risk disclosure. The findings also suggest that reporting on some risk disclosure types especially displaced commercial risk and rate of return risk is very low. The regression results show that Islamic banks with a stronger set of corporate governance mechanisms and an active Shariah board appear to disclose more risk information. Other factors that influence risk disclosure practices of Islamic banks are bank size, leverage, cross-border listings and the level of political and civil regression. The study recommends that Islamic banks have to revise their communication strategies and provide more risk information related to rate of return risk and display commercial risk. In addition, GCC regulators should establish risk disclosure regulations which have to become mandatory for all Islamic banks. To the best of our knowledge, the paper provides the first analysis related to the determinants of corporate risk disclosures of Islamic banks in the Arab Gulf region.