Plants have been used in various regions of the world to treat various medical conditions including male infertility. The review aims to evaluate the pharmacological effects of watermelon consumption in improving male fertility and sexual function. Watermelon is a popular fruit consumed around the world for its diverse nutritional and health-promoting qualities. This study showed the mechanism via which watermelon enhances male fertility as it was reported for improving semen quality, reversing erectile dysfunction, enhancing testicular redox status, as well as improving gonadotropin secretion. These activities have been linked to their constituents as it contains vitamins and phytochemicals such as phenols and certain flavonoids that contribute to their antioxidant properties. Watermelon has also been noted to possess antimicrobial, anti-helminthic, antioxidant, antidiabetic, anti-inflammatory, and antihypertensive properties that may contribute to its therapeutic use.