To provide a clutch apparatus that is able to prevent a trigger lever from returning before a toothed portion of a clutch member engages a ratchet wheel and may be reduced in size.A clutch member 93, a lever member 115 that switches from a clutch engaged state to a non-engaged state and a lever pivot gear 111 are provided. An engaging projecting portion 100 is partially formed on the lever pivot gear in a circumferential direction. An engaged projecting portion 129 that is engageable with the engaging projecting portion is partially formed around the lever shaft in a circumferential direction. A differential device is configured so that, when an engagement between an engaging pawl 98 and a clutch engaging portion 123 is released, the engaging projecting portion is engaged with the engaged projecting portion thereby to pivot the lever member in a direction away from the clutch member and, after that, when a drive transmission system is driven in a reverse direction to pivot a drive side gear in an opposite direction so that a toothed portion of the clutch member is engaged with the drive side gear 92, the engaging projecting portion does not engage the engaged projecting portion before the clutch member is swung to a position at which the clutch engaging portion does not re-engage an engaging pawl when the lever member is pivoted.