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Though the benzene radical anion has been the subject of ESR studies, there has been no information on the vibrational spectrum of this theoretically important species. In this work, the preparation of the radical anion was approached by deposition of thins films of potassium in benzene at 90 K. The exposure of the original deep blue codeposits to the beam of an argon ion laser produced a marked bleaching. Nevertheless, the quasi-bleached samples yielded a stable reproducible resonance Raman spectrum. The major bands in this spectrum (1590, 1480, 1360 and $960cm-1$) are nearly coincident with the strongest infrared bands for the original deposits. These infrared and Raman features have been assigned to ring-stretching modes of the benzene radical anion. The coincidence of the infrared and Raman features suggests a vibronic infrared-activation of ‘g’ modes, an activation that may depend on contact with the potassium counter ion.