A line stopper for a fishing reel according to the discloser includes a line stopper member that includes a fishing line catching portion and a support shaft portion, and a supporting member that supports the line stopper member and fits in a through hole formed in a main body of the fishing reel. On one of the fishing line catching portion or the supporting member, a protrusion is provided at a left or right side or both the left and right sides of the support shaft portion in a width direction of the supporting member in a plan view where the fishing line catching portion and the supporting member overlap each other.