Africa 
China 
Japan 
MENA 
- Lactucopicrin
- Lactulose
- Lacuna
- Lacunae
- Lacunar ligament
- Lacunar stroke
- Ladd's bands
- Ladostigil
- Laetrile
- Lafora disease
- Lag phase
- Lagerstroemia speciosa
- Lagging
- Lagophthalmos
- Lambda cyhalothrin
- Lambert-Eaton myasthenic syndrome
- Lambl's excrescences
- Lamellae
- Lamellar body
- Lamellar bone
- Lamellar ichthyosis
- Lamellar phase
- Lamellar structure
- Lamellipodia
- Lamellipodium
- Lamictal
- Lamin
- Lamin B receptor
- Lamina
- Lamina densa
- Lamina dura
- Lamina lucida
- Lamina papyracea
- Lamina propria
- Lamina terminalis
- Laminar flow cabinets
- Laminar organization
- Laminarin
- Laminectomy
- Laminopathies
- Laminopathy
- Laminoplasty
- Laminotomy
- Lamivudine
- Lamotrigine
- Lampreys
- Lanadelumab
- Lanatoside C
- Lancefield grouping
- Landau-Kleffner Syndrome
- Landau-Kleffner syndrome
- Landfill gas
- Landraces
- Langat virus
- Langendorff heart
- Langer's lines
- Langerhans cell
- Langerhans cell histiocytosis
- Langerhans cell sarcoma
- Langerin
- Language delay
- Language development
- Language disorders
- Language module
- Laninamivir
- Lanolin
- Lanostane
- Lanosterol
- Lanosterol 14 alpha-demethylase
- Lanreotide
- Lansoprazole
- Lanthanum
- Lanthanum carbonate
- Lanthionine
- Lantibiotics
- Lanugo
- Lapacho
- Lapachol
- Laparoscopic cholecystectomy
- Laparoscopic hernia repair
- Laparoscopic radical prostatectomy
- Laparoscopic surgery
- Laparoscopy
- Laparotomy
- Lapatinib
- Laplace's approximation
- Laquinimod
- Larazotide
- Larazotide acetate
- Lard
- Large B-cell lymphoma
- Large cell
- Large cell carcinoma
- Large cell neuroendocrine carcinoma
- Large deformation diffeomorphic metric mapping
- Large for gestational age
- Large granular lymphocyte
- Large granular lymphocytic leukemia
- Large intestine
- Large-cell lymphoma
- Large-scale brain networks
- Lariciresinol
- Laricitrin
- Larmor frequency
- Laron syndrome
- Laropiprant
- Larsen syndrome
- Larva currens
- Larva migrans
- Larvicides
- Laryngeal cancer
- Laryngeal cartilages
- Laryngeal cavity
- Laryngeal cleft
- Laryngeal inlet
- Laryngeal mask airway
- Laryngeal papillomatosis
- Laryngeal ventricle
- Laryngeal vestibule
- Laryngectomy
- Laryngitis
- Laryngocele
- Laryngology
- Laryngomalacia
- Laryngopharyngeal reflux
- Laryngoscope
- Laryngoscopy
- Laryngospasm
- Laryngotomy
- Laryngotracheal reconstruction
- Laryngotracheal stenosis
- Laryngotracheitis
- Laryngotracheobronchitis
- Larynx
- Laser Doppler imaging
- Laser Doppler vibrometry
- Laser ablation
- Laser beams
- Laser capture microdissection
- Laser coagulation
- Laser doppler flowmetry
- Laser doppler imaging
- Laser guidance
- Laser hair removal
- Laser lithotripsy
- Laser medicine
- Laser photocoagulation
- Laser radiation
- Laser skin resurfacing
- Laser surgery