To provide a roller conveyor that prevents an endless belt from coming off from a driven roller even when the curvature of a conveying path is set to be large, and achieves reduction of noise when conveyance.

The roller conveyor includes: a plurality of conveying rollers 2 arranged side by side to form the conveying path having the predetermined curvature; a plurality of driven rollers (5a to 5d) arranged side by side along the conveying path; and the endless belt 4 disposed in a state where it abuts on the respective conveying rollers 2 in the middle of suspension on the respective driven rollers, wherein the driven roller is made rotatable centering an axis nearly orthogonal to a plane formed by the conveying path and guides the endless belt 4, and the side surface of the endless belt 4 is set to abut on the respective conveying rollers 2. The endless belt 4 is constituted of a belt having a nearly rectangular cross section, which is formed so that width of its surface on a side guided by the driven roller may be larger than width of the side surface which abuts on the conveying roller 2.