Searches for Exotics: Heavy resonances with the ATLAS detector

Many theories that go beyond the Standard Model predict the existence of new heavy resonances decaying into pairs of particles. We summarize a wide collection of recent results from the ATLAS experiment at the Large Hadron Collider on searches for resonances decaying to various combinations of charged leptons, neutrinos, jets from gluons or light quarks, top quarks, photons and heavy gauge bosons. Limits are set on a variety of theories beyond the Standard Model used as benchmarks, among them Kaluza-Klein, Randall-Sundrum and ADD models with extra dimensions, as well as Grand Unified Theories and Technicolor.