A hinge structure including an axis body, a torque member, and a pressing assembly is provided. The axis body includes a contact surface. The torque member leans against the contact surface of the axis body. The torque member and the axis body are rotatable relatively around a central axis of the axis body. The contact surface pushes the torque member to move around the central axis of the axis body when the torque member and the axis body rotate relatively. The pressing assembly provides a pushing force to the torque member to push the torque member to push towards the contact surface. A plurality of electronic devices having the hinge structure are further provided.