OCCI

OCCI may refer to:


 * Online Civil Courage Initiative, a partnership between the Institute for Strategic Dialogue and Facebook
 * Ontario Case Costing Initiative, see Canadian Institute for Health Information
 * Ontario Consortium for Cardiac Imaging, a project of Sunnybrook Research Institute
 * Open Cloud Computing Interface, an open protocol for cloud computing
 * Oracle C++ Call Interface, a proprietary database API
 * Osaka Chamber of Commerce and Industry; see Inabata Katsutaro