The present invention provides a fishing spinning reel including a reel unit and a rotor that is rotatably supported by the reel unit. The reel unit includes: a body that has a side opening portion and in which a spool reciprocating device is housed and supported; a lid that closes the side opening portion; and a cover member mounted on a rear portion of the body. A handle shaft is rotatably supported by the body and the lid. In the rear portion of the body, a rear opening portion for receiving at least a part of a component of the spool reciprocating device and disposing the component on the rear side is formed. The cover member covers the rear opening portion and the component.