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We consider the asymptotic quasinormal frequencies of various spin fields inSchwarzschild and Reissner-Nordstr\"om black holes. In the Schwarzschild case,the real part of the asymptotic frequency is ln3 for the spin 0 and the spin 2fields, while for the spin 1/2, the spin 1, and the spin 3/2 fields it is zero.For the non-extreme charged black holes, the spin 3/2 Rarita-Schwinger fieldhas the same asymptotic frequency as that of the integral spin fields. However,the asymptotic frequency of the Dirac field is different, and its real part iszero. For the extremal case, which is relevant to the supersymmetricconsideration, all the spin fields have the same asymptotic frequency, the realpart of which is zero. For the imaginary parts of the asymptotic frequencies,it is interesting to see that it has a universal spacing of $1/4M$ for all thespin fields in the single-horizon cases of the Schwarzschild and the extremeReissner-Nordstr\"om black holes. The implications of these results to theuniversality of the asymptotic quasinormal frequencies are discussed.Comment: Revtex, 17 pages, 3 eps figures; one table, some remarks and  references added to section I

Asymptotic quasinormal frequencies of different spin fields in spherically symmetric black holes