| HFOC | Historic Formula One Championship | 历史性一级方程式锦标赛 |
| HFOC | HealthCare Foundation for Orange County (California) | 奥兰治县医疗基金会（加利福尼亚州） |
| HFOC | Healthcare Foundation of Orange County | 奥兰治县医疗基金会 |
| HFOC | Hearing Federation Of Canada | 加拿大听证会联合会 |
| HFOC | High Flow Oxygen Conserver | 高流量氧气储存器 |
| HFOC | Healthy Families Oneida County | 奥奈达县健康家庭 |
| HFOC | Horizon Family Of Churches | 地平线教堂家族 |