An optical component driving mechanism is provided and includes a fixed assembly, a movable assembly, a driving assembly and a circuit assembly. The movable assembly is movable relative to the fixed assembly, the movable assembly is configured to hold an optical component, and the optical component defines an optical axis. The driving assembly is for driving the movable assembly to move relative to the fixed assembly. The circuit assembly is disposed on a first side and a second side of the optical component driving mechanism, and the first side is not parallel to the second side.