This study aimed to investigate the impact of earnings volatility on earnings sustainability of Egyptian listed companies, especially in light of the scarcity of previous studies that have been subjected to study this impact in the Egyptian environment. To achieve this goal, this study examined the effect of earnings volatility on two important attributes of accounting earnings are persistence and predictability, which have been identified as key components of sustainable earnings. In order to test the hypotheses, the researcher relied on a sample of 126 listed non-financial Egyptian companies, with 630 firm-year observations, between 2014 and 2018, and continued his listing in the Egyptian stock exchange during 2019. The results showed that earnings persistence is negatively related to earnings volatility, while the results showed no significant impact of earnings volatility on earnings predictability. Finally, this study highlights the contribution of earnings volatility towards forecasting future earnings.