The ATLAS Search for Supersymmetry and its Connection to Dark Matter

This talk discusses how a Supersymmetry (SUSY) discovery at the LHC could improve our understanding of Dark Matter. We present a selection of recent and older ATLAS studies that show how a combination of LHC measurements can be used to constrain the SUSY model, which in favorable models may allow us to calculate the mass, nuclear interaction cross-section, and relic density of the lightest SUSY particle (LSP). Comparing these quantities with results from Dark Matter direct-detection experiments, and with results from Observational Cosmology, would enable us to establish the role of the SUSY LSP in the Dark Matter within the next decade.