| ULF | Ultra Low Frequency | 超低频 |
| ULF | Ultra Low Frequency (300-3000 Hz; 1,000-100 km) | 超低频（300-3000 Hz；1000-100 km） |
| ULF | Ultra-Low-Floor (tramway) | 超低地板（电车轨道） |
| ULF | ultra-low frequency | 超低频 |
| ULF | United Leukodystrophy Foundation | 联合白细胞营养不良基金会 |
| ULF | united leukemia fund | 联合白血病基金 |
| ULF | Unified Look and Feel | 统一的外观和感觉 |
| ULF | Ultra-Low Floor | 超低地板 |
| ULF | Unknown Life Form | 未知生命形式 |
| ULF | Unidentified Life Forecast | 未知寿命预测 |
| ULF | Ultra Large Format | 超大格式 |
| ULF | Underspecified Logical Form | 未指定的逻辑形式 |
| ULF | Un-Lock then Firing (STRPN transition) | 解锁然后点火（STRPN转换） |
| ULF | Ultra Large Female | 超大内螺纹 |
| ULF | Unit Load Former (machine which loads cases and shrinkwraps them together) | 单元装载成型机（将箱子装载并收缩包装在一起的机器） |
| ULF | Ultra-Low-Flush | 超低冲洗 |
| ULF | Ukrainian Legal Foundation | 乌克兰法律基金会 |