A toothed belt comprising: an endless toothed belt body made of polyurethane resin and provided, on its inner circumference, with a plurality of toothed portions spaced apart from one another; a cord buried in the toothed belt body so as to lie along a belt length direction and form a helical pattern having a pitch in a belt width direction; a nonwoven fabric buried in the toothed belt body at a position that is closer to the inner circumference in a belt thickness direction than a position where the cord is buried, the nonwoven fabric filled with the polyurethane resin which forms the toothed belt body and lying along the belt length direction; and a woven fabric or a knitted fabric integrally disposed in the toothed belt body at a position that is closer to the inner circumference in the belt thickness direction than the position where the nonwoven fabric is buried, the woven fabric or the knitted fabric filled with the polyurethane resin which forms the toothed belt body and lying along the belt length direction, wherein a tooth bottom portion between the toothed portions has an uneven surface formed due to a weave pattern of the woven fabric or a knit loop pattern of the knitted fabric, characterized in that portions of the nonwoven fabric corresponding to the toothed portions are protruded toward the toothed portions to have a thickness that is 50% or more on average of a height of the toothed portion and the portions of the woven fabric or the knitted fabric corresponding to the toothed portions are not exposed on surfaces of the toothed portions, but are buried in the toothed portions. an endless toothed belt body made of polyurethane resin and provided, on its inner circumference, with a plurality of toothed portions spaced apart from one another; a cord buried in the toothed belt body so as to lie along a belt length direction and form a helical pattern having a pitch in a belt width direction; a nonwoven fabric buried in the toothed belt body at a position that is closer to the inner circumference in a belt thickness direction than a position where the cord is buried, the nonwoven fabric filled with the polyurethane resin which forms the toothed belt body and lying along the belt length direction; and a woven fabric or a knitted fabric integrally disposed in the toothed belt body at a position that is closer to the inner circumference in the belt thickness direction than the position where the nonwoven fabric is buried, the woven fabric or the knitted fabric filled with the polyurethane resin which forms the toothed belt body and lying along the belt length direction, wherein a tooth bottom portion between the toothed portions has an uneven surface formed due to a weave pattern of the woven fabric or a knit loop pattern of the knitted fabric, characterized in that portions of the nonwoven fabric corresponding to the toothed portions are protruded toward the toothed portions to have a thickness that is 50% or more on average of a height of the toothed portion and the portions of the woven fabric or the knitted fabric corresponding to the toothed portions are not exposed on surfaces of the toothed portions, but are buried in the toothed portions.