| LTH | Ley de Territorios HistÓricos | Ley de Territorios HistÓricos |
| LTH | Lathrop Wells, Nevada USA | 美国内华达州Lathrop Wells |
| LTH | Lunds Tekniska Högskola (University in Lund, Sweden) | Lunds Tekniska Högskola (University in Lund, Sweden) |
| LTH | Linear Time Heuristic (Algorithm) | 线性时间启发式（算法） |
| LTH | Luteotropic Hormone | 促黄体激素 |
| LTH | Lactogenic Hormone | 产乳激素 |
| LTH | Light Towed Howitzer | 轻型牵引榴弹炮 |
| LTH | Length Field | 长度字段 |
| LTH | Left Hand Thread | 左手螺纹 |
| LTH | Linearized Time-Dependent Hartree | 线性化时间相关Hartree |
| LTH | Launcher Transport Head | 发射器运输头 |
| LTH | Lethality & Target Hardening | 具及目标硬化 |
| LTH | Letters to Home (band) | 家书（乐队） |
| LTH | LeTterHead | 信头 |
| LTH | local tumor hyperthermia | 局部肿瘤热疗 |
| LTH | Licence in Theology (academic qualification) | 神学执照（学术资格） |
| LTH | low-temperature holding | 低温保温 |
| LTH | Lepidoptera of Thailand | 泰国鳞翅目 |
| LTH | Love, Truth, and Honor (Sigma Nu International Fraternity) | 爱、真理和荣誉（Sigma Nu国际兄弟会） |
| LTH | Lithuanian (language) | 立陶宛语（语言） |
| LTH | La Tyrie HÉroïque (online game guild) | La Tyrie HÉroïque (online game guild) |
| LTH | Little Three Happiness (Chinese restaurant, Chicago, Illinois) | 小三幸福（中餐厅，伊利诺伊州芝加哥） |