The effects of simultaneous exposures to whole‐body vibration and steady‐state noise were observed for thresholds of hearing in chinchillas. Four groups of animals were exposed to one of the following conditions: (a) noise only (500 Hz centered octave band, 100 dB SPL); (b) vibration alone at body resonance (63–89 Hz, 0.1grms, 1.0grms); (c) noise + resonant vibration; and (d) noise + nonresonant vibration (14–20 Hz, 0.1grms, 1.0grms,). The exposures lasted 6 h per day over 20 consecutive days. No interaction was demonstrated with the combination of nonresonant vibration and noise, but small increases in TTS and PTS were observed when the resonant vibration was added to the noise. Increasing the acceleration from 0.1grmsto 1.0grmsdid not result in a corresponding increase in TTS. Thresholds in the group exposed only to vibration improved slightly.