  The latest measurements of the top quark mass obtained by the ATLAS and CMS
experiments at the LHC for centre-of-mass energies of 7 and 8 TeV are
presented. The mass of the top quark is measured using several methods and
channels, including the reconstructed invariant mass distribution of the top
quark and shapes of top quark decay distributions. Measurements based on the
inclusive tt-bar cross section and novel observables based on the differential
cross section in the tt-bar + 1 jet channel are also discussed. The results of
the various channels are combined and compared to the world average.
