We have studied the desorption of negative ions following low energy electron impact (0–15 eV) to ozone condensed in multilayer amounts on a cryogenically cooled gold surface. Intense desorption of O⁻ is observed at low electron energies (below 4 eV) ia pronounced resonances with an estimated desorption cross section of the order of 10⁻¹⁸ cm² (peak value). The resonant features in the ion yield indicate that O⁻ desorption is driven by dissociative electron attachment to O₃ molecules at or near the surface. While dissociative electron attachment (DA) from gas phase ozone generates the fragment ions O⁻ and O₂⁻ at comparable intensities, desorption of O₂⁻ from condensed ozone is strongly suppressed, being only weakly observed within a resonance located at 7 eV. Possible implications for the heterogeneous chemistry of ozone on polar stratospheric cloud (PSC) particles, namely photo-induced dissociative electron transfer from the substrate, are discussed in the light of the effective O⁻ desorption observed at low electron energies.