Results on BSM Higgs bosons searches at ATLAS (Run 1 and Run 2)

The coupling measurements of the particle discovered in 2012 by the ATLAS and CMS Collaborations suggest no deviation from the Higgs boson as expected from the Standard Model (SM). However, many beyond the SM theories (BSM) foresee a more complex Higgs sector and hence additional Higgs bosons. These new scalar particles could appear as excesses in events containing two bosons or two fermions. Direct searches for BSM Higgs bosons in final states with tau leptons or vector bosons have been performed by the ATLAS experiment. Recent results of these searches are presented.