Supersymmetric Particle Searches at Lep

Searches for supersymmetric particles performed at LEP 1 and LEP 2 are reviewed. Using the MSSM with R-parity conservation as a reference model, the various analyses are briefly described, and the results are presented in terms of mass and coupling limits. Further implications of these results are discussed, including lower limits on the mass of a neutralino LSP, assuming the MSSM with GUT relations. Less conventional scenarii, among which those involving R-parity violation, are also investigated.