We introduce here a method for direct writing of magnetic micro actuators based on two-photon lithography, in which a photochemical reaction can be triggered with the use of a femtosecond laser and the nearly simultaneous absorption of two photons. In our case, this reaction is a two-photon crosslinking reaction, which crosslinks polymer chains by means of a C,H insertion. Using pre-polymers in combination with superparamagnetic nanoparticles, it is possible to write micro actuators from a polymer-nanoparticle composite in one step. This allows high-resolution magnetic micro actuators to be written directly by means of two-photon crosslinking. The magnetic movement depends not only on material parameters, but can also be influenced by the writing parameters, which affect the crosslinking density. We show how this tool kit can be used for the design of micro actuators with complex shapes (spheres, overhanging elements, …) and tuneable properties designed to manage specific applications (for example stimulation of biological cells).