A rotary angle sensor used to determine a relative angular position as compared to a reference position, comprising a housing (1), at least one rotor (3, 4) that is rotatably mounted inside said housing (1), one circuit board (2) containing electrical and/or electronic components as well as one or multiple stators corresponding to the number of used rotors (3, 4). The rotary angle sensor is supposed to be improved in such a manner that allows for an especially precise alignment of a circuit board inside a housing and an easy installation of said board. This is achieved by the circumstance that bearing surfaces (9) for the circuit board (2) are provided in the direct radial vicinity of the stator inside the housing (1) and that clamping structures (11) are radially aligned with the stator in order to position the circuit board (2).