| DREF | Disaster Relief Emergency Fund | 救灾应急基金 |
| DREF | Disaster Relief Emergency Fund (International Red Cross/Red Crescent) | 救灾应急基金(国际红十字/红新月) |
| DREF | Distribution Research and Education Foundation | 分销研究与教育基金会 |
| DREF | dose reduction effectiveness factor | 剂量减少有效系数 |
| DREF | Delta Research and Educational Foundation | Delta研究与教育基金会 |