An electromotive camshaft adjuster for adjusting the angle of rotation of the camshaft (14) of an internal combustion engine relative to the crankshaft thereof is provided. The camshaft adjuster includes a triple-shaft gear mechanism, which has a driving wheel (2, 2a') that is fixed to the crankshaft and is embodied as a sprocket or a synchronous belt wheel, an output part which is fixed to the camshaft, and an adjustment shaft (18, 18') which is connected in a rotationally fixed manner to a rotor of an electric adjustment motor, having a stator that is fixed on the internal combustion engine. In order to keep the effort for producing the adjusting gears relatively low, the triple-shaft gear mechanism is preferably constructed as a swashplate or single eccentric internal gear drive (1, 25), the effort for production thereof being minimized by forming the same in a non-cutting manner, reducing the number of components, and inexpensively adjusting or compensating the backlash.