To provide a toroidal type continuously variable transmission including a thrust rolling bearing to support a power roller, wherein a good lubricating performance of rolling bearing is assured while a retainer 34b to be set in the bearing is prevented from breakage.

Grooves 40a... to serve as lubricant passages for the lubricant to flow into a pocket are formed at the inner and outer faces of the retainer 34b, wherein the condition 0.29≤H/L≤0.88 should be met, where H is the depth in axial direction of the grooves 40a... while the width in the circumferential direction is represented by 2L.