A torque limiting device for a fishing reel for limiting torque between first and second rotating members, the torque limiting device includes an engagement recess, an engagement member and a biasing member. The engagement recess is disposed on an inner circumferential surface of the second rotating member. The engagement member has a head portion that engages the engagement recess and is disposed on the first rotating member so as to be capable of advancing toward or retreating from the second rotating member. The biasing member biases the engagement member toward the second rotating member. The head portion of the engagement member has a straight part at a distal end that extends linearly in a direction of the axis of rotation of the first rotating member.