An anti-snoring device including first and second arcuate members. The first member defines a receptacle for receiving teeth located on either of the user's upper or lower jaw, and a first plurality of fasteners on an opposite side and extending outwardly therefrom. The second member defines a receptacle for receiving teeth located on the other of the user's upper or lower jaws, and a second plurality of fasteners on an opposite side and extending outwardly therefrom. The first and second plurality of fasteners are each formed by elongate, parallel extending projections that define voids therebetween. Selective engagement of the projections and voids allows the first and second members to be secured together in a plurality of different relative positions.