Searches for new physics with leptons in ATLAS

The leptonic final states are relatively clean with respect to SM QCD background, and many new physics models will manifest themselves in these states through new particle mass resonances, harder particle transverse momentum, or very large missing transverse energy. ATLAS sets out to search for the exotic signatures of W', Z', SUSY, Leptoquarks, LRSM Majorana neutrinos and diboson resonances. We present the prospects of these searches, and the sensitivities reached in some of these searches with the early data collected by ATLAS in 2010.