| HL | Hot Line | 热线 |
| HL | Horizontal Line | 水平线 |
| HL | House of Lords | 上议院[英] |
| HL | HIPS LINE | 坐围线 |
| HL | Heavily Loaded | 重负荷 |
| HL | Hypertext Links | 超文本链路 |
| HL | Holiday Leave | 假期 |
| HL | Horseland (game) | 马场(游戏) |
| HL | Honolulu Laboratory | 檀香山实验室 |
| HL | Horizon League (formerly Midwest Collegiate College) | 地平线联盟(前身为中西部大学学院) |
| HL | Hellgate London (videogame) | 地狱门伦敦(电子游戏) |
| HL | High Temperature Limit | 高温极限值 |
| HL | Hasta Luego | Hasta Luego公司 |
| HL | Higher Level (course) | 更高级别(课程) |
| HL | Hypotenuse Leg (geometry) | 下肢(几何) |
| HL | Heilig (German: Holy) | 海利格(德语:Holy) |
| HL | Head Lines | 头部线条 |
| HL | Hepatic Lipase | 肝脂肪酶 |
| HL | Head Librarian | 图书馆馆长 |
| HL | half-life | 半衰期 |
| HL | Hannoversche Leben (German Life Insurance Company) | Hannoversche Leben(德国人寿保险公司) |
| HL | Louro Quer Bolacha (Portugal) | Louro Quer Bolacha(葡萄牙) |
| HL | Halbleiter (German: semiconductor) | Halbeliter(德语:半导体) |
| HL | Head Linesman (football) | 首席边裁(足球) |
| HL | Hepatic Triglyceride Lipase | 肝甘油三酯脂肪酶 |
| HL | Heath Ledger (actor) | 希斯·莱杰(演员) |
| HL | Hochlicht | Hochlicht公司 |
| HL | Membership Hot Line | 会员热线 |
| HL | HektoLitre | Hekto升 |
| HL | Hecla Mining Company | 赫克拉矿业公司 |
| HL | Hashed List | 散列表 |
| HL | Habs Lampoon | 哈布斯兰蓬 |
| HL | Higher Level | 更高级别 |
| HL | Highline | 突出显示 |
| HL | High Limit | 上限 |
| HL | Hockey League | 曲棍球联盟 |
| HL | Home Leave | 探亲假 |
| HL | Latent Hypermetropia | 隐性远视 |
| HL | Hectolitre | 赫克托利特 |
| HL | Hysteresis Loss | 磁滞损耗 |
| HL | Hospitalisation Libre (French) | 住院自由(法语) |
| HL | Hoc Loco (Latin: In This Place, epigraphy) | 特设地点(拉丁语:In This Place,金石学) |
| HL | Hac Lege (Latin: According to This Law, epigraphy) | Hac Lege(拉丁语:根据该法律,金石学) |
| HL | Hospitality and Leisure | 酒店和休闲 |
| HL | Harmonie Laval (Laval, Quebec, Canada) | Harmonie Laval(加拿大魁北克省拉瓦尔) |
| HL | Hundred Liters | 100升 |
| HL | Highlander (cartoon) | 汉兰达(卡通) |
| HL | Hydraulic Length | 水力长度 |
| HL | Hall Lantern (elevators) | 大厅灯(电梯) |
| HL | Humerus Length (fetal) | 肱骨长度(胎儿) |
| HL | Hired Labor (USACE) | 雇佣劳工(USACE) |
| HL | Huey Lewis | 休伊·刘易斯 |
| HL | heparin lock | 肝素锁 |
| HL | hypoplastic leukemia | 发育不良白血病 |
| HL | hyperlipemia | 高脂血症 |
| HL | histiocytic lymphoma | 组织细胞淋巴瘤 |
| HL | human leukocyte | 人类白细胞 |
| HL | hypertrichosis lanuginosa | 羊毛癣 |
| HL | histocompatibility locus | 组织相容性位点 |
| HL | high carbohydrate diet containing leguminous fibre | 含豆科纤维的高碳水化合物饮食 |
| HL | Hurricane Landcrash | 飓风Landcrash |
| HL | hairline | 发际线 |
| HL | Horse Life | 马的生活 |
| HL | mustard-lewisite's mixture | 芥子气-路易(氏)气混合剂 |
| HL | Hyperpigmented Lesions | 色素沉着病变 |
| HL | Heart and Lungs | 心脏和肺 |
| HL | Horizontal Landing | 水平平台 |
| HL | Heavy Liquid | 重质液体 |
| HL | Heat Loss | 热损失 |
| HL | Head Lice | 头部舔 |
| HL | Home Loan | 住房贷款 |
| HL | Hall and Lieberman economic theory | 霍尔和利伯曼经济理论 |
| HL | Hearing Loss | 听力丧失 |
| HL | Hit List | 点击列表 |
| HL | Hill | 山丘 |
| HL | Hochleistungsmotor (German: High-speed engine) | Hochleistungsmotor(德语:高速发动机) |
| HL | Hard Labor | 艰苦的劳动 |
| HL | Healthy Living | 健康生活 |
| HL | Hydrated Lime | 熟石灰 |
| HL | Hierarchical Leader-based (routing scheme) | 基于分层领导(路由方案) |
| HL | Half Life | 半衰期 |
| HL | Hearing Level | 听力水平 |
| HL | hypertriglyceridemia | 高甘油三酯血症 |
| HL | Hepatic Lipidosis | 脂肪肝 |
| HL | hyperlipoproteinemia | 高脂蛋白血症 |
| HL | High Land | 高地 |