A spinning reel (100) includes a first component member (39) and a second component member (2). The second component member (2) has a fitting recess (21) and a groove (22). The first component member (39) fits into the fitting recess (21). The fitting recess (21) includes an inner surface (211) that contacts the first component member and a bottom surface (212) that contacts the first component member (39). The groove (22) is formed on at least one of the inner surface (211) and the bottom surface (212).
