A bail arm is provided in a spinning reel for guiding a fishing line to a spool and is mounted to a rotor that includes a first rotor arm and a second rotor arm opposed to the first rotor arm. The bail arm includes a first bail support member 40, a fixing shaft 43, a line roller 41, a fixing shaft cover 44, a fixing bolt 46, and an anti-rotation member 47. The first support member 40 is pivotally mounted to the first rotor arm. The fixing shaft 43 is fixed to the first support member 40. The fixing bolt 46 includes a non-circular head portion 46a and fixes the fixings shaft 43 to the first support member 40. The anti-rotation member 47 is detachably mounted to the first support member 40 and makes contact with the outer peripheral surface of the non-circular head portion 46a for preventing rotation of the fixing bolt 46.