Erayada ka bilowda xarafka L ee Walax-ogaalka (physics)
- Lag: Dibdhac
- Lagging current: Qulqul dibdhac
- Lamp: Laambad
- Lamp, Arc: Laambad qaanseed
- Lamp, electric: Laambad danabeed
- Lamp, Mercury vapour: Laambad Uumi-meerkori
- Latent heat: Kul dahsoone
- Latitude: Lool
- Lattice: Raso
- Lead: Hor
- Leakage current: Liig qulqul
- Leakage flux: Burqan liig
- Least action principle: Xeerka Fal-u-yare
- Least time principle: Xeerka ammin-u-yare
- Leclanche cell: Unugga Leklaanji
- Length: Dherer
- Left-hand rule: Xeerka Gacan-bidix
- Lens: Bikaaco
- Lens, focal length of: Dhererka kulmis bikaac
- Lens, focal point of: Bar kulmis bikaac
- Lens, power of: Awood bikaac
- Lens formula: Qaacidada bikaacada
- Lifetime: Cimri
- Light: Ilays
- Lightening: Hillaac
- Light, theories of: Aragtiyaha Ilayska
- Light year: Sanno Ilays
- Limiting current: Qulqul xadeeye
- Linear: Toosan
- Linear expansion: Fidid dherer
- Line of force: Xarriiq xoog
- Line of voltage: Xarriiq fooltej
- Liquefication of Gases: Horeynta neefaha
- Liquid: Hoor
- Litre: Litir
- Load: Rar
- Load line: Xarriiq rar
- Logarithm: Loogardam
- Logic circuit: Mareeg loojig
- Longitude: Dhig
- Longitudinal wave: Hir dherersan
- Loop: Qool
- Loss: Lun
- Loudness: Dhawaaq
- Loudspeaker: Sameecad
- Low frequency: Rakaad hoose
- Low voltage: Fooltej hoose
- Lubrication: Xaydhayn
- Lumen (unit): Luuman (halbeeg)
- Luminance: Iftiimid
- Luminous emittance: Bixin iftiimeed
- Luminous flux: Burqad iftiimeed
- Luminous intensity: Itaal iftiimeed
- Lux (unit): Lagas (halbeeg)
- Lyman series: Taxa Layman