This 1993 CIA document lists various crypts and their definitions. WOMACE is identified as "DDO." Note that DDO might plausibly mean Deputy Director of Operations, but other documents indicate that an organization component is being referred to.
This cable states that the subject "was of interest to WOMACE component July 59..." This is one of the records that WOMACE refers to an organization rather than person, presumably the Directorate of Operations.
This document is something of an anomaly - using the WOMACE crypt in 1961, whereas other uses of WO crypts seem to date from 1967 onwards.