[en] LAPP is a high energy physics laboratory founded in 1976 and is one of the 19 laboratories of IN2P3 (National Institute of Nuclear and particle physics), institute of CNRS (National Centre for Scientific Research). LAPP is joint research facility of the University Savoie Mont Blanc (USMB) and the CNRS. Research carried out at LAPP aims at understanding the elementary particles and the fundamental interactions between them as well as exploring the connections between the infinitesimally small and the unbelievably big. Among other subjects LAPP teams try to understand the origin of the mass of the particles, the mystery of dark matter and what happened to the anti-matter that was present in the early universe. LAPP researchers work in close contact with phenomenologist teams from LAPTh, a theory laboratory hosted in the same building. LAPP teams also work since several decades at understanding the neutrinos, those elementary almost massless particles with amazing transformation properties. They took part in the design and realization of several experiments. Other LAPP teams collaborate in experiments studying signals from the cosmos. This document presents the activities of the laboratory during the years 1996-1997: 1 - Presentation of LAPP; 2 - Data acquisition experiments: e"+e"- annihilations at LEP (standard model and beyond the standard model - ALEPH, Study of hadronic final state events and Search for supersymmetric particles at L3 detector); Neutrino experiments (neutrino oscillation search at 1 km of the Chooz reactors, search for neutrino oscillations at the CERN Wide Band neutrino beam - NOMAD); Quarks-Gluons plasma; Hadronic spectroscopy; 3 - Experiments under preparation (CP violation study - BABAR, Anti Matter Spectrometer in Space - AMS, Search for gravitational waves - VIRGO, Search for the Higgs boson - ATLAS and CMS); 4 - Technical departments; 5 - Theoretical physics; 6 - Other activities