Abstract: An anti-snoring mouth guard for insertion into a mouth of a user for decreasing snoring and the effects of sleep apnea includes a mouthpiece portion having a bottom wall and a pair of upstanding side walls displaced and opposite one another and extending upwardly from the bottom wall, said mouthpiece having a hemispherical configuration that is complementary to a shape of the user's teeth. Collectively, the bottom wall and pair of side walls define a channel operable to receive teeth of a user's upper pallet. The anti-snoring mouth guard includes tongue depressor portion having a proximal end coupled to the mouthpiece and having a body extending rearwardly at a generally downward angle. A brace may extend between rear ends of the mouthpiece portion and define levels by which the tongue depressor may be inserted such that the tongue depressor may be adjusted vertically and front-to-back.