An overview of latest ATLAS measurements of top pair ( tt ) production in proton-proton collisions at the LHC at centre-of-mass energies of 7 and 8 TeV is presented. Measurements of the tt production cross section (σ tt ) in various decay channels, including analyses of differential σ tt distributions and a study of jet multiplicity in tt production, as well as searches for tt resonances using boosted top techniques and standard methods, are discussed.