| H/L | HardLine 
| Others |
| H/L | High Level
| Others |
| HL | Habs Lampoon
| Others |
| HL | Hac Lege
| Others |
| HL | Hair Loss
| Others |
| HL | Half Life
| Others |
| HL | Haliaetus Leucocephalus
| Others |
| HL | Hall and Lieberman economic theory
| Others |
| HL | Hall of Languages
| Others |
| HL | Hamilton Library
| Others |
| HL | Hapag-Lloyd
| Others |
| HL | Happiness Level
| Others |
| HL | Hard Labour
| Others |
| HL | Hard Limiting
| Others |
| HL | Harlan Leonard
| Others |
| HL | Harry Larry
| Others |
| HL | Hashed List
| Others |
| HL | Hazardous Location
| Others |
| HL | Head Lice
| Others |
| HL | Head Linesman
| Others |
| HL | Health Level
| Others |
| HL | Healthy Living
| Others |
| HL | Hearing Level
| Others |
| HL | Hearing Loss
| Others |
| HL | Heart and Lungs
| Others |
| HL | Heart Land
| Others |
| HL | Heart Lung
| Others |
| HL | Heat Loss
| Others |
| HL | Heavy Lift
| Others |
| HL | Heavy Liquid
| Others |
| Hl | Hectoliter
| Others |
| HL | Heel Line
| Others |
| HL | Heilmann and Lieb (non-crossing rule)
| Others |
| HL | HektoLitre
| Others |
| HL | Henry Louis
| Others |
| HL | Hepatic Lipase
| Others |
| HL | Hepatic Lipidosis
| Others |
| HL | Hes Lying
| Others |
| HL | Hidden Layer
| Others |
| HL | High Lanuch
| Others |
| HL | High Launch
| Others |
| HL | High Load
| Others |
| HL | High Loft
| Others |
| HL | High Lord
| Others |
| HL | High Low
| Others |
| HL | High Lumen
| Others |
| HL | High Luster
| Others |
| HL | Higher Level
| Others |
| HL | Hinge Line
| Others |
| HL | Hiram Lewis
| Others |
| HL | Hitachi Lg
| Others |
| HL | HochLicht
| Others |
| HL | Hockey League
| Others |
| HL | HogwartsLive
| Others |
| HL | Holland
| Others |
| HL | Home Loan
| Others |
| HL | Hopeful Lurker
| Others |
| HL | Hora Lagna
| Others |
| HL | Horizontal Landing
| Others |
| HL | Horse Life
| Others |
| HL | Host Language
| Others |
| HL | Hot Launch
| Others |
| HL | Hot Load
| Others |
| HL | House of Lords
| Others |
| HL | Humerus Length
| Others |
| HL | Hup Leck
| Others |
| HL | Hurricane Landcrash
| Others |
| HL | Hydrogen Line
| Others |
| HL | Hyperpigmented Lesions
| Others |
| HL | Hypotenuse Leg
| Others |
| HL | Hypothetical Learning
| Others |
| HL | Membership Hot Line
| Others |
| hl. | heilig
| Others |