Cool Stars 14 - Submitted Abstract # 122 This version created on 05 October 2006 A k-NN Method for Brown Dwarfs Searches with Spitzer/IRAC Massimo Marengo, Harvard-Smithsonian Center for Astrophysics Mayly C. Sanchez, Harvard University Brian M. Patten, Harvard-Smithsonian Center for Astrophysics Joseph L. Hora, Harvard-Smithsonian Center for Astrophysics Lori Allen, Harvard-Smithsonian Center for Astrophysics We have developed a statistical technique, based on the k-Nearest Neighbor method, for the photometric classification of astronomical sources. We present here the application of the method for the search of L and T brown dwarfs using infrared photometry from Spitzer/IRAC and 2MASS. ----------------------------------