Companies
* Saskatchewan Government Insurance * Scientific Games International, a gambling company *Other uses
* Saanich-Gulf Islands, a federal electoral district in British Columbia, Canada * Silicon Graphics Image, a graphics file format for Silicon Graphics workstations * Soka Gakkai International, a Nichiren Buddhist movement and also a non-governmental organization (NGO) * SGI, the IATA code for Mushaf Airbase in Pakistan *'' Stargate Infinity'', an animated television series *Spheroidal graphite iron, another name for ductile iron * Sustainable Governance Indicators, statistics measuring the need for reform among Organisation for Economic Co-operation and Development countriesSee also
* SG1 (disambiguation) * SGL (disambiguation) {{disambiguation