| Acronym | Definition |
|---|
| ISY➣International Space Year |
| ISY➣Institutionen För Systemteknik |
| ISY➣I See You |
| ISY➣International Statistical Yearbook (est. 1990) |
| ISY➣International School Yangon (Myanmar) |
| ISY➣International Stadium Yokohama (Yokohama, Japan) |
| ISY➣International Symposium on Yeasts |