Presence de l'oeuvre de P. Lelong dans les grands themes de recherche d'aujourd'hui.- Bibliographic de P. Lelong.- Wiener's type sufficient conditions in ?N.- On the Ohsawa-Takegoshi-Manivel L2 extension theorem.- A geometrical application of the product of two positive currents.- Hypoellipticity: geometrization and speculation.- Moment problems for weighted Bergman kernels.- On the Bergman metric near a plurisubharmonic barrier point.- On the vanishing order of a holomorphic germ along a complex analytic germ in ?n.- Stationary curves and complete integrability in the complex domain.- The Malgrange vanishing theorem with support conditions.- Mesures orthogonales a support compact de longueur finie et applications.- Convexity and Hartogs' theorem in some open subset of a projective manifold.- Pointwise support functions for convex domains of finite type.- Un exemple d'obstruction geometrique a l'extension des fonctions holomorphes bornees.- Potential theory on complex dynamics: regular polynomial mappings of ?k.- Boundaries of Levi-flat hypersurfaces of ?2.- Une demonstration directe de la densite des cycles repulsifs dans l'ensemble de Julia.- Embeddings for 3-dimensional CR-manifolds.- List of Problems.