Inorganic nitrate (NO3−) has emerged as a potential ergogenic aid over the last couple of decades. While recent systematic reviews and meta-analyses have suggested some small positive effects of NO3−supplementation on performance across a range of exercise tasks, the effect of NO3−supplementation on performance during single and repeated bouts of short-duration, high-intensity exercise is unclear. This review was conducted following PRISMA guidelines. MEDLINE and SPORTDiscus were searched from inception to January 2023. A paired analysis model for cross-over trials was incorporated to perform a random effects meta-analysis for each performance outcome and to generate standardized mean differences (SMD) between the NO3−and placebo supplementation conditions. The systematic review and meta-analysis included 27 and 23 studies, respectively. Time to reach peak power (SMD: 0.75,p= 0.02), mean power output (SMD: 0.20,p= 0.02), and total distance covered in the Yo-Yo intermittent recovery level 1 test (SMD: 0.17,p< 0.0001) were all improved after NO3−supplementation. Dietary NO3−supplementation had small positive effects on some performance outcomes during single and repeated bouts of high-intensity exercise. Therefore, athletes competing in sports requiring single or repeated bouts of high-intensity exercise may benefit from NO3−supplementation.