Recordings have been made of gelada monkeys freely vocalizing during normal social interchanges in captivity. Spectrographic analyses and perceptual evaluations of the recordings suggest that these primates produce a greater range of vocal distinctive contrasts than have been observed previously. In particular, evidence is presented which suggests that gelada monkeys are capable of producing three distinctive voice qualities, a wide range of vowel qualities, and a set of consonants that differ in manner of articulation (glides, a fricative, plosives, nasals) and in place of articulation (labial, postdental, velar).Subject Classification: [43]70.40, [43]70.20; [43]80.50.