| ISO | International Standards Organization | 国际标准化组织 |
| ISO | International Science Organization | 国际科学组织 |
| ISO | International Sugar Organization | 国际糖组织 |
| ISO | Insurance Services Office | 保险业务事务所 |
| ISO | International Student Organization | 国际学生组织 |
| ISO | Intelligence and Security Office | 情报安全处 |
| ISO | Infrared Space Observatory | 红外空间观测台 |
| ISO | Imperial Service Order | 帝国服役勋章 |
| ISO | Imperial Symphony Orchestra | 帝国交响乐团 |
| ISO | Interior Systems Optimization | 内部系统优化 |
| ISO | International Society of Organbuilders | 国际建筑商协会 |
| ISO | Kinston, NC, USA (Airport Code) | 美国北卡罗来纳州金斯顿（机场代码） |
| ISO | In Search Of | 寻找 |
| ISO | [not an acronym] common short name for the International Organization for Standardization; also see Iso- prefix | [不是首字母缩略词]国际标准化组织的通用简称；另请参见Iso前缀 |
| ISO | International Organization for Standardization | 国际标准化组织 |
| ISO | Independent Service Organization | 独立服务机构 |
| ISO | Intermediary Services Organization | 中介服务机构 |
| ISO | International Satellite Organization | 国际卫星组织 |
| ISO | Independent System Operator | 独立系统操作员 |
| ISO | Industry Standards Organization (IEEE-ISTO) | 行业标准组织（IEEE-ISTO） |
| ISO | Insurance Service Organization | 保险服务组织 |
| ISO | Information Systems Officer | 信息系统军官 |
| ISO | Illinois Symphony Orchestra | 伊利诺伊交响乐团 |
| ISO | Independent Scholar Option | 独立学者选项 |
| ISO | Institutional Support Office | 机构支持办公室 |
| ISO | Internet Sales Outlet | 互联网销售网点 |
| ISO | Interservice Support Office | 军种间支助办公室 |
| ISO | Imaging Spectrometric Observatory | 成像光谱观测站 |
| ISO | Imamia Students Organization (Pakistan) | 伊玛米亚学生组织（巴基斯坦） |
| ISO | Isochronical Inspection (USAF; phase of aircraft maintenance) | 等时检查（美国空军；飞机维护阶段） |
| ISO | Inspection of Supplies | 供应品检查 |
| ISO | Interstedelijk Studenten Overleg (Netherlands student organization) | Interstedelijk Studenten Overleg（荷兰学生组织） |
| ISO | International Standards Organization (common, but incorrect) | 国际标准组织（常见，但不正确） |
| ISO | Intraseasonal Oscillation | 季节内振荡 |
| ISO | Intelligence and Security Office(r) | 情报和安全办公室（r） |
| ISO | Isolation (sports play-calling, especially basketball) | 隔离（体育比赛，尤其是篮球） |
| ISO | Open System Interfacing | 开放系统接口 |
| ISO | Installation Support Office | 安装支持办公室 |
| ISO | Isolierverglasung (German: insulating glass) | Isolierverglasung（德语：绝缘玻璃） |
| ISO | International Switch Operations | 国际交换机操作 |
| ISO | In Support Of .... | 支持。。。。 |
| ISO | Impuesto de Solidaridad (Guatemala) | Solidaridad罪（危地马拉） |
| ISO | Inspection of Services | 服务的检查 |
| ISO | Information Systems Office | 信息系统办公室 |
| ISO | Insurance Services Office, Inc. (CMSP and PLSP statistics are reported to this rate making organization) | 保险服务办公室（CMSP和PLSP统计数据报告给该费率制定组织） |
| ISO | Istanbul Sanayi Odasý (Turkish: Istanbul Chamber of Industy) | Istanbul Sanayi Odasý (Turkish: Istanbul Chamber of Industy) |
| ISO | Information Security Officer | 信息安全官 |
| ISO | Incentive Stock Option | 激励性股票期权 |
| ISO | Installation Supply Officer | 设施补给官 |
| ISO | Indian Student Organization | 印度学生组织 |
| ISO | Isometric | 等轴测的 |
| ISO | Istanbul Sanayi Odasi | 伊斯坦布尔Sanayi Odasi |
| ISO | Isotope | 同位素 |
| ISO | Isoproterenol | 异丙肾上腺素 |
| ISO | Integration Staff Officer | 集成参谋 |
| ISO | Installation Safety Office | 安装安全办公室 |
| ISO | International Socialist Organization | 国际社会主义组织 |
| ISO | Independent Sales Organization | 独立销售组织 |
| ISO | Indianapolis Symphony Orchestra | 印第安纳波利斯交响乐团 |
| ISO | In Support Of | 支持 |
| ISO | Isolated Power (baseball statistic) | 孤立力量（棒球统计） |
| ISO | isooctane | 异辛烷 |
| ISO | isotropic | 各向同性的 |
| ISO | isoflurane | 异氟烷 |
| ISO | International Standardization Organization | 国际标准化组织 |
| ISO | IEC ISO International Electrotechnical Committee | IEC ISO国际电工委员会 |
| ISO | It's Soon Out | 它很快就出去了 |
| ISO | Imamia Student Organization | Imamia学生组织 |
| ISO | International Standards of Operations | 国际操作标准 |
| ISO | Insurance Services Office, Inc. | 保险服务办公室。 |
| ISO | ISO-9660 table | ISO-9660表格 |
| ISO | Intraseasonal Atmospheric Oscillation | 季内大气振荡 |
| ISO | I'm Still Online | 我仍然在线 |
| ISO | Interactive Support Online | 交互式在线支持 |
| ISO | Initial Sign- On | 初始登录 |
| ISO | Independent Systems Operator | 独立系统操作员 |
| ISO | Insurance Services Organization | 保险服务组织 |
| ISO | Kinston, North Carolina USA | 美国北卡罗来纳州金斯顿 |
| ISO | Infringing Software Organization | 侵权软件组织 |
| ISO | Industry Standard Operation | 行业标准操作 |