China 
Africa 
- Lasmiditan
- Lasofoxifene
- Lassa fever
- Lassa virus
- Latah
- Latanoprost
- Late bloomer
- Late effects
- Late life depression
- Late proteins
- Late talker
- Late termination of pregnancy
- Late-term abortion
- Latency stage
- Latent autoimmune diabetes
- Latent autoimmune diabetes in adults
- Latent homosexuality
- Latent inhibition
- Latent iron deficiency
- Latent period
- Latent profile analysis
- Latent tuberculosis
- Latent variables
- Lateral
- Lateral cervical nucleus
- Lateral cord
- Lateral corticospinal tract
- Lateral cricoarytenoid muscle
- Lateral epicondyle
- Lateral epicondyle of the femur
- Lateral epicondyle of the humerus
- Lateral femoral cutaneous nerve
- Lateral flow test
- Lateral funiculus
- Lateral geniculate body
- Lateral geniculate nucleus
- Lateral group
- Lateral hypothalamus
- Lateral incisor
- Lateral inhibition
- Lateral internal sphincterotomy
- Lateral lemniscus
- Lateral line
- Lateral line system
- Lateral malleolus
- Lateral medullary syndrome
- Lateral meniscus
- Lateral pectoral nerve
- Lateral plantar artery
- Lateral plantar nerve
- Lateral plate mesoderm
- Lateral prefrontal cortex
- Lateral pterygoid muscle
- Lateral pterygoid nerve
- Lateral recess
- Lateral rectus muscle
- Lateral release
- Lateral retinaculum
- Lateral spinothalamic tract
- Lateral sulcus
- Lateral sural cutaneous nerve
- Lateral thalamic nuclei
- Lateral thinking
- Lateral thoracic artery
- Lateral thoracic vein
- Lateral umbilical fold
- Lateral ventricle
- Lateral vestibular nucleus
- Lateral vestibulospinal tract
- Laterality
- Laterodorsal tegmental nucleus
- Latex agglutination
- Latex agglutination test
- Latex allergy
- Lathosterol
- Lathyrism
- Latin hypercube
- Latin squares
- Latissimus dorsi
- Latissimus dorsi muscle
- Latrines
- Latrodectism
- Latrotoxin
- Latrunculin
- Lattice corneal dystrophy
- Lattice degeneration
- Laudanosine
- Laudanum
- Lauge-Hansen classification
- Laughter
- Laugier-Hunziker syndrome
- Laurdan
- Laurence-Moon syndrome
- Lauric acid
- Laurus nobilis
- Lavage
- Lavandula angustifolia
- Lavandulol
- Lavender oil
- Lawsone
- Laxatives
- Lazabemide
- Lazarus syndrome
- LcrV
- Le Chatelier's principle
- Lead abatement
- Lead and Copper Rule
- Lead aprons
- Lead citrate
- Lead compound
- Lead oxide
- Lead paint
- Lead poisoning
- Lead time bias
- Leaf protein concentrate
- Leaf spot
- Leafy
- Leaky gut syndrome
- Leaky scanning
- Lean body mass
- Lean body weight
- Learned helplessness
- Learned optimism
- Learning algorithms
- Learning disability
- Learning styles
- Learning theory
- Learning to learn
- Leber congenital amaurosis
- Leber's congenital amaurosis
- Leber's hereditary optic neuropathy
- Lebrikizumab
- Lecanoric acid
- Lecithin
- Lecithin cholesterol acyltransferase
- Lecithin sphingomyelin ratio
- Lecithinase
- Lectin pathway
- Lectins
- Ledderhose disease
- Ledipasvir
- Ledol
- Lee Silverman Voice Treatment
- Lefamulin
- Leflunomide
- Left anterior descending artery
- Left anterior fascicular block
- Left atrial appendage occlusion
- Left atrial enlargement
- Left atrial volume