The diameter of 88 THISBE from its occultation of SAO 187124 The 7 October 1981 occultation of SAO 187124 by 88 Thisbe was observedat 12 sites. The occultation observations, together with informationabout the asteroid's light curve, give a mean diameter for Thisbe of 232± 12 km. This value is 10% larger than the previously publishedradiometric diameter of Thisbe.