Lacan Jacques;
laissez-faire;
Lakatos Imre;
Lamarck Jean Baptiste de Monet Chevalier;
LAMBDA;
lambda abstraction;
lambda-calculus;
lambda expression;
lambda lifting;
La Mettrie Julien Offray de;
Langer Susanne;
language;
language of thought;
Laplace Pierre Simon de;
latency;
LaTeX;
lattice;
leaf;
least fixed point;
least upper bound;
Le Doeuff Michèle;
legal positivism;
Leibniz Gottfried Wilhelm;
lemma;
Lenin Vladimir Ilyich;
Lessing Gotthold Ephraim;
Leucippus;
Lewis Clarence Irving;
lexeme;
lexical definition;
lex talionis;
liar paradox;
liberalism;
libertarianism;
libertas;
Life;
like this;
linear argument;
linear function;
linear logic;
linear map;
linear programming;
linear space;
linear transformation;
linear type;
list;
Lobachevsky Nikolai Ivanovich;
Locke John;
locutionary act;
Loebner Prize;
Loewenheim-Skolem theorem;
logarithmus dualis;
logic;
logical axiom;
logical complement;
logical empiricist;
logical form;
logical implication;
logical positivism;
logical relation;
logical validity;
logic gate;
logic programming;
logic variable;
logicization of arithmetic;
logos - mythos;
Lombard Peter;
long term memory;
loop;
Lorenz attractor;
Lorenz Konrad;
Lotze Rudolf Hermann;
Lovejoy Arthur Oncken;
lower set;
LTM;
Lucretius Titus Lucretius Carus;
Lukacs Grygory;
Lukasiewicz Jan;
Luxemburg Rosa;
Lyotard Jean-Francois;