PROBLEM TO BE SOLVED: To provide a fishing spinning reel in which a body is light weight, and in which support accuracy and support intensity of a rear support part can be achieved.SOLUTION: A fishing spinning reel 100 of the invention comprises: a reel body 1 having a body 10 with a side opening 13; and a spool reciprocation device 50 stored in the body 10. The body 10 comprises: a peripheral wall part 22b formed into a cylindrical shape with a handle axis 5 as a center, for surrounding a storage space in the body 10; and an edge 13a of a side opening 13 to which a lid member 30 is attached, the lid member having a bearing part for supporting the handle axis 5. A rear part of the peripheral wall part 22b has a recess part 27 which is formed by making the inner peripheral face 22a dent to outside of a radial direction relative to the edge part 13a and on which a rear part of the guide axis 51 is arranged, and a rear support part 28 which is formed by forming an engagement part 28a to a wall part 27c arranged on a rear part to the recess part 27 and supporting the rear part of the guide axis 51, and a slide piece 52 is at least partially stored in the recess part 27 in rearward movement.SELECTED DRAWING: Figure 5COPYRIGHT: (C)2020,JPO&INPIT【課題】本発明は、ボディを軽量化しつつ、後支持部の支持精度及び支持強度の向上を図れる魚釣用スピニングリールを提供する。【解決手段】本発明の魚釣用スピニングリール100は、側部開口部13が形成されたボディ10を有するリール本体1と、ボディ10内に収容されるスプール往復動装置50とを備え、ボディ10は、ハンドル軸5を中心に筒状を呈しボディ10内の収容空間を囲む周壁部22bと、ハンドル軸5を支持する軸受部を有する蓋部材30が取り付けられる側部開口部13の縁部13aを備え、周壁部22bの後部には、内周面22aを縁部13aよりも径方向外側に窪ませて成りガイド軸51の後部が配置される凹状部27と、凹状部27に対して後方に位置する壁部27cに係合部28aを形成して成りガイド軸51の後部を支持する後支持部28が形成され、摺動子52は後方移動時に少なくとも一部が凹状部27内に収容される。【選択図】図5