  First ATLAS searches for signals of Supersymmetry in proton-proton collisions
at the LHC are presented. These searches are performed in various channels
containing different lepton and jet multiplicities in the final states; the
full data sample recorded in the 2010 LHC run, corresponding to an integrated
luminosity of 35 $\rm{pb}^{-1}$, has been analysed. The limits on squarks and
gluinos are the most stringent to date.
