The master’s thesis deals with the design and manufacturing of an axial fan consisting of an impeller and its individual blades, with performance and design requirements based on the need for its use in subsonic wind tunnel conditions with open air circulation. The design of the impeller is further modified to meet the requirements for manufacturing and assembly, while meeting the required aerodynamic and strength parameters. The thesis includes a brief summary of the theory of the additive manufacturing method used, wind tunnels and fan impellers. The thesis presents a variant solution of the distribution of the individual fan blades and also the hub. The calculation of the necessary parameters for the design of the fan blades is described, as well as the subsequent prototype manufacturing, assembly, and balancing process of the assembly. In the conclusion of the thesis there are descriptions of the course of measurements of the individual performance characteristics of the fan and the evaluation of the results.