| HAAP | Hawthorne Army Ammunition Plant | 霍索恩陆军弹药工厂 |
| HAAP | Hispanic Academic Achievement Program | 西班牙裔学术成就计划 |
| HAAP | Homebase/Advanced Assignment Program | Homebase /高级作业程序 |
| HAAP | Hispanic AIDS Awareness Program | 西班牙裔艾滋病宣传计划 |
| HAAP | Hampshire Admissions Associate Program | 汉普郡招生助理计划 |
| HAAP | High Altitude Aeronautical Platform | 高空航空平台 |
| HAAP | Hugus Alfalfa & Arab Pintos | Hugus紫花苜蓿和阿拉伯Pintos |
| HAAP | Historical Abuse Appeal Panel | 历史虐待上诉小组 |
| HAAP | Hansen Associates Architects and Planners | Hansen Associates建筑师和规划师 |
| HAAP | Holler At A Player | 向球员喊话 |
| HAAP | Healthcare All-Access Project | 医疗保健全面接入项目 |