A water sports nasal guard prevents unwanted contaminated water from entering a user's nostrils. The water sports nasal guard includes a mouth guard, an upper tongue shield, a lower tongue shield, and a nostril shield. The mouth guard allows the user to bite down on the water sports nasal guard, thereby upholding the nostril shield against the nasal passages of the user. The nostril shield presses up against the openings of the user's nasal passages. The mouth guard further includes an arch-shaped body, an upper teeth receptacle, and a lower teeth receptacle. The arch-shaped body positions the upper teeth receptacle and the lower teeth receptacle opposite to each other, both of which accommodate the upper teeth and lower teeth of the user. The upper tongue shield and the lower tongue shield prevent the user's tongue from coming between the teeth of the user and the mouth guard.