(redirected from Olmsted County Hockey Association)
OCHAOffice for the Coordination of Humanitarian Affairs (United Nations)
OCHAOregon Council for Hispanic Advancement
OCHAOrange County Housing Authority (California USA)
OCHAOffice of Consumer Health Assistance
OCHAOff Campus Housing Assistance
OCHAOrange County Homeowners Association
OCHAOhio Health Care Association
OCHAOxford Citizens Housing Association Ltd. (UK)
OCHAOrleans County Historical Association (Albion, NY)
OCHAOlmsted County Hockey Association (now Rochester Mite Hockey Association)
OCHAOregon Clearing House Association
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