Instrument Support Group仪器支持群体 Individual and Small Group (medical insurance)个人或小组(医疗保险) Infrastructure Support Group基础设施 Intermarket Surveillance Group监察小组。跨 Iraq Survey Group伊拉克调查小组 Information Storage Group (HP)信息存储组(HP) Intelligence Support Group智力支持群体 Ichthyosis Support Group鱼鳞病 Information Systems Group信息系统 Intelligent Services Gateway (Cisco)智能服务网关(思科) Information Systems Group (IBM)信息系统(IBM) Integrated Security Gateway综合安全网关 Immune Serum Globulin免疫血清球蛋白 Iraq Study Group伊拉克研究小组联合主席 International Steel Group国际集团