Results of searches for highly ionising particles and particles with
anomalously high electric charge produced in proton-proton collisions in
the ATLAS detector are presented. Such signatures, encompassing particles
with charges from 10 to 60 times the electron charge, involve high levels
of ionization in the ATLAS detector and can arise from magnetic monopoles
or models involving technicolor, doubly charged Higgs bosons or composite
dark matter models.