In this paper, we report a technique for tracking multiple small moving targets using a millimeter-wave Frequency-Modulated Continuous-Wave radar. Radar images are obtained from raw radar data collected by a radar system that performs a digital beamscanning in the azimuth plane and a mechanical beamscanning in the elevation plane. Trajectories of several targets in the scene are estimated from a new multi-target tracking (MT 2 ) algorithm based on the calculation of the global nearest neighbors. We demonstrate the effectiveness of this algorithm from the tracking of two moving targets. Our preliminary experimental results obtained for short range (up to 2.0 meters) outdoor detection of small tags pave the way for future research on tracking tagged flying insects and could therefore be useful for studying the behavior and ecology of pollinators.