Absorption cross sections of ozone in the Wulf-Chappuis band at 759--768 nm have been determined using cavity ring-down spectroscopy at 215--298 K. Precise measurements at 762.07 and 764.47 nm revealed a slight temperature dependence of the absorption cross sections: $sigma$(762.07 nm, 298 K) = (2.86 ¿ 0.04) ¿ 10-22 cm2 molecule-1; $sigma$(762.07 nm, 215 K) = (2.62 ¿ 0.04) ¿ 10-22; $sigma$(764.47 nm, 296 K) = (2.70 ¿ 0.03) ¿ 10-22; and $sigma$(764.47 nm, 214 K) = (2.44 ¿ 0.03) ¿ 10-22. Results at 762.07 nm are indistinguishable within the experimental uncertainties from those reported by Burkholder and Talukdar <1994>. Results from the present work facilitate a more accurate retrieval of atmospheric temperature, cloud height, and cloud coverage data from satellite measurements of absorption by O2 in the A band around 761 nm.