The title compound N-diphenylphosphoryl-4-bromoaniline was prepared from 4-bromoaniline and chlorodiphenylphosphine in the presence of triethylamine, and its structure was determined by X-ray diffraction analysis. The crystals are monoclinic, space group P2(1)/n with a = 12.432(3), b = 8.9512(18), c = 15.150(3) angstrom, alpha = 90.00, beta = 102.89(3), gamma = 90.00 degrees, V = 1643.4(6) angstrom(3), and Z = 4.