SJI

SJI may refer to:
 * St. Joseph's Institution, a school in Singapore
 * St. John's Institution, a school in Kuala Lumpur, Malaysia
 * South Jersey Industries, an energy services holding company
 * San Juan Island, USA
 * The St. James Infirmary Clinic in San Francisco, California
 * San Jose Airport (Mindoro), Philippines (IATA code)