Wet friction disc

A wet friction disc comprising:

• a lubrication groove which is provided in a surface that faces a mating member disposed so as to face the wet friction disc in an axial direction, and through which flows a lubricant supplied to a friction surface that frictionally slides on the mating member;
• and
• a plurality of lands which is defined by the lubrication groove and of which surfaces on one side in the axial direction constitute the friction surface, wherein:
• the lubrication groove has a plurality of circumferential groove portions that extends in a circumferential direction and has a predetermined groove width in a radial direction, and a plurality of intersecting groove portions that extends in directions intersecting the circumferential direction;
• and
• at least some of the circumferential groove portions have an arc shape such that an end in the circumferential direction is located adjacent to one of the lands in the circumferential direction and that the groove width is entirely contained within a range in the radial direction spanned by that land.