- l ... La Débâcle
- La Esperanza ... La Paz
- La Paz ... Lā‘ie
- La’nga, Lake ... laboratory
- laboratory diagnosis ... labyrinthodont
- labyrinthodont ... Lacock
- Lacombe, Friar François ... ladder dredge
- Ladder for Booker T. Washington ... Lady Killer
- Lady Killer, The ... Laffer curve
- Laffer, Arthur ... Lagos, Ricardo
- Lagos, University of ... Laine, Denny
- Laine, Papa Jack ... Lake Superior-type banded-iron formation deposit
- Lake Superior-type BIF deposit ... Lalitpur
- Lalitpur ... Lambeau, Curly
- Lambeau, Earl Louis ... lamiid
- Lamikis ... Lampyris noctiluca
- Lamsdorff, Matthew ... Lanchester, Waldo
- Lanchester-Prandtl wing theory ... Landa, Diego de
- Landais, Pierre ... Landowski, Paul
- Landrace ... Lang Bian, Plateau du
- Lang Glacier ... Langmuir-Child equation
- Lango ... Lannemezan, Plateau de
- Lannes, Jean, duc de Montebello ... Lao Theung
- Lao Tzu ... Laptev Sea
- Laptev, Dmitry ... large-scale photography
- large-scale wind system ... Larsen, Henning
- Larsen, Henning Göbel ... Lasco, Johannes à
- laser ... Lasso, Guillermo
- Lasso, Orlando di ... Last of Mr. Norris, The
- Last of Sheila, The ... Late Bloomer, A
- Late Bronze Age ... lateral hypaxial muscle
- lateral lemniscus ... Latin language
- Latin League ... Laud, William
- lauda ... Laurana, Francesco
- Laurana, Luciano ... Lauzun, Antonin-Nompar de Caumont, Count and Duke de
- Lauzun, Duc de ... Law and Jake Wade, The
- Law and Justice ... Lawrence University
- Lawrence v. Texas ... Lay of Igor’s Campaign, The
- Lay of the Land, The ... LBJ
- LBJ ... Le Maçon, Robert
- Le Maire, Jacques ... lead dioxide
- lead glance ... leaf-nosed bat
- leaf-nosed snake ... learned behaviour
- learned helplessness ... Lebanon, Republic of
- Lebanov, Ivan ... Leclerc, Jean
- LeClercq, Tanaquil ... Lee v. Weisman
- lee wave ... Leedy, U. G.
- leek ... legal education
- legal ethics ... Leghorn
- leghorn ... Lehmann, Henri
- Lehmann, Inge ... Leighton, Sir Frederic, Baronet
- Leighty, Osa Helen ... Leland, Charles Godfrey
- Leland, Henry M. ... Lemony Snicket’s A Series of Unfortunate Events
- Lemosí language ... Lennox, 1st Duke of
- Lennox, Ann ... Leo onca
- Leo pardus ... Leonidas II
- Leonidas of Tarentum ... leopon
- Leosthenes ... Leptodactylidae
- Leptodactylinae ... Les Rêveries du promeneur solitaire
- Les Rites de Passage ... lesser flamingo
- lesser florican ... Let the Right One In
- Let the River Run ... Lettera semiseria di Grisostomo al suo figliuolo
- Letteraria Italiana, Accademia ... Lettres Provinciales
- Lettres sur la danse et sur les ballets ... levalto
- Levant ... Levine, Charles Michael
- Levine, Dov ... Lewinsky, Monica
- Lewinsky, Monica Samille ... Lewiston Falls
- Lewiston-Auburn College ... Lézarde, La
- lezghinka ... Li K’o-jan
- Li K’o-yung ... Lia
- Lia Fail ... Libel of English Policy
- Libeled Lady ... Liberal Party
- Liberal Party of Australia ... Liberty Party
- Liberty Records ... Licancábur, Mount
- Licata ... Lieber, Franz
- Lieber, Stanley Martin ... Life
- life ... Life of Crime
- Life of Dante ... Life-Line
- life-of-man ... Light in the Piazza
- light industry ... Lights, Festival of
- lightship ... Lilavati
- Lilburne, John ... Lima, Jorge de
- Lima, Manuel dos Santos ... limit order
- limit point ... Lin Feng-mien
- Lin Fengmian ... lindane
- lindane lotion ... line graph
- line intaglio ... lines of latitude
- Lines on the Island of Utopia by the Poet Laureate, Mr. Windbag Nonsenso’s Sister’s Son ... linkage-drive hoist
- linkar ... Linz-Donawitz process
- Linzi ... Liparis
- Liparis lilifolia ... liquid crystal
- liquid crystal display ... Liski
- Liskov, Barbara ... List of Chinese Philosophers
- list of choreographers ... list of flies
- list of fungi ... list of plants in the family Myrtaceae
- list of plants in the family Orchidaceae ... list of vegetables
- list of viverrids ... Literary Odyssey of the 1920’s, A
- literary prose ... Lithuania, history of
- Lithuania, Republic of ... Little Criminals
- Little Cripple ... Little Missouri River
- Little Mo ... Little, Arthur D.
- Little, Cleavon ... Liu Xiu
- Liu Xuan ... liver rot
- liver sinusoid ... living, cost of
- Living, The ... Lizzo
- Ljouwert ... Lloyd, Humphrey
- Lloyd, John ... Lobanov-Rostovsky, Aleksey Borisovich, Knyaz
- lobar artery ... Local Habitation, A
- local health authority ... Lockheed Martin Corporation
- Lockheed P-3 ... Loesser, Frank Henry
- Loew, Marcus ... Logica ‘Nostrorum petitioni sociorum’
- Logica Demonstrativa ... Loire
- Loire Basin ... Lombino, Salvatore Albert
- Lomblen Island ... London Metropolitan Police
- London Missionary Society ... Long Beach
- Long Beach ... Long, Long Trailer, The
- Long, Luz ... Longair, Malcolm
- Longair, Malcolm Sim ... longneck clam
- longneck eel ... Look Up
- Look What You Made Me Do ... López Ortega, Domingo
- López Pérez, Rigoberto ... lord chancellor
- Lord Chandos Letter, The ... Lorenzetti, Pietro
- Lorenzini, ampulla of ... Los Angeles Chargers
- Los Angeles Chinese Massacre of 1871 ... Lost in La Mancha
- Lost in Space ... Lott, Ronnie
- Lott, Teixeira ... Louis III
- Louis III ... Louise Of Savoy
- Louise, Lake ... Love and Anarchy
- Love and Bullets ... Love Suicides at Sonezaki, The
- Love Supreme, A ... Lovers, The
- Loves and Wars of Relative Scale, The ... low-temperature polymer rubber
- low-tridymite ... Lower Sorbian language
- Lower South ... LP
- LP ... lü-shih
- Lü-shun ... Lucaris, Cyril
- lucarne ... Lucite
- Lucius ... Lüdke, Bruno
- Ludlovian Series ... Lugard, Frederick
- Lugaro, Emilio ... Łukasiewicz, Jan
- Łukasiński, Walerian ... Luminy
- lumirhodopsin ... Lundy
- Lundy’s Lane, Battle of ... lupin
- Lupin, Arsène ... lussekatter
- Lussy, Melchior ... Lüttich
- Lüttich, Operation ... Lv
- LVAD ... lycopsid
- Lycopsida ... Lynch, B. Suarez
- Lynch, Benito ... Lyot, Bernard
- Lyotard, Jean-François ... Lyukina, Anastasiya Valeryevna
- lyxose ... LZW
