Dark Matter searches with the ATLAS detector

Astrophysical and cosmological measurements provides probes for Dark Matter (DM) existence but its identity and physical properties are still unknown. DM can be produced at the LHC. Different analyses are designed and performed by ATLAS to search for DM production. The talk is an overview of Run2 ATLAS searches for DM. In absence of excesses in data, the analyses are interpreted in the context of simplified models. A selection of searches is presented and their results are discussed.