Search for R-parity violating supersymmetry with the ATLAS detector

R-parity violation in supersymmetry gives rise to many unique experimental signatures. We describe searches with the ATLAS detector for supersymmetry with R-parity violating decays. Examples include searches for resonant sneutrino decays to an electron and a muon, and displaced vertices arising from the late decays of heavy objects with a muon in the final state. The most recent results on these channels are presented based on data recorded with the ATLAS detector in 7~TeV $pp$ collisions at the CERN Large Hadron Collider in 2010 and 2011.