| ISSX | International Society for the Study of Xenobiotics | 国际外源物代谢研究学会 |
| ISSX | I S S Group, Inc. | IS集团。 |
| ISSX | Interchange Specialty Service, Inc. | Interchange Specialty Service公司。 |
| ISSX | Internet Security Systems Inc. (stock abbreviation, AMEX) | Internet Security Systems Inc.（股票缩写，AMEX） |
| ISSX | Internetworking Security Services Expert (The Netherlands) | 网络安全服务专家（荷兰） |