Rate constants for OH(X2IIi, v = 1-3) vibrational relaxation induced by nonreactive collision with O2 have been measured. OH(v) is created by the H + O3 → OH(v ≤ 9) + O2 reaction in an electron-irradiated O3, H2, Ar mixture OH(v) fundamental and first overtone IR emission is observed using time-resolved fourier spectroscopy. Spectral fitting followed by kinetic fitting of the resultant populations using a single-quantum relaxation model yields rate constants of kv=1 = (1.3 ± 0.4) × 10-13, kv=2 = (2.1 ± 0.3) × 10-13, k,v=3 = (2.9 ± 0.8) × 10-13 (all units are in cm3/s). The measurements are consistent with and extend published results on the same system, as well as predictions made by Schwartz-Slawsky-Herzfeld theory.