Search for doubly charged Higgs bosons with the ATLAS detector

This contribution will focus on two complementary searches for doubly charged Higgs bosons ($H^{\pm\pm}$) in ATLAS using $pp$ collisions at $\sqrt{s}=13$ TeV. This new particle allows to explain the lightness of neutrino masses through a type-II seesaw mechanism and appears in many BSM theories such as left-right symmetric models or Higgs triplets.