| CHAP | Challenge – Handshake Authentication Protocol | 盘问握手认证协议 |
| CHAP | Christian Homeschool Association of Pennsylvania | 宾夕法尼亚州基督教家庭学校协会 |
| CHAP | Christian Home educators Association of Pennsylvania | 宾夕法尼亚州基督教家庭教育协会 |
| CHAP | Chicago Health and Aging Project | 芝加哥健康与老龄化项目 |
| CHAP | Cadet Harassment Abuse Prevention | 防止学员骚扰虐待 |
| CHAP | Community Health Advocacy Program | 社区健康倡导计划 |
| CHAP | Challenge Handshake Authentication Protocol | 质询握手验证协议 |
| CHAP | Council of Health Agencies of the Philippines | 菲律宾卫生机构理事会 |
| CHAP | Computer Hierarchy Authentication Protocol | 计算机层次认证协议 |
| CHAP | Compton High-Altitude Pulse | 康普顿高空脉冲 |
| CHAP | Contractor Held Air Force Property | 承包商持有的空军财产 |
| CHAP | CHAPARRAL Air Defense Weapon | CHAPARRAL防空武器 |
| CHAP | Challenge | 挑战 |
| CHAP | Cadet Harassment and Abuse Prevention (Canada) | 防止学员骚扰和虐待（加拿大） |
| CHAP | Channel Processor | 通道处理器 |
| CHAP | Community Health Accreditation Program | 社区健康认证计划 |
| CHAP | Children Have A Potential | 儿童有潜力 |
| CHAP | Challenge-Handshake Authentication Protocol | 挑战握手验证协议 |
| CHAP | Community Health Aide Program | 社区健康援助计划 |
| CHAP | Common Humanitarian Action Plan | 共同人道主义行动计划 |
| CHAP | Chemical Hazard Awareness Program | 化学品危害意识计划 |
| CHAP | Community Health Action Project | 社区卫生行动项目 |