  We present the activities of the "New Physics" working group for the "Physics
at TeV Colliders" workshop (Les Houches, France, 3--21 June, 2013). Our report
includes new computational tool developments, studies of the implications of
the Higgs boson discovery on new physics, important signatures for searches for
natural new physics at the LHC, new studies of flavour aspects of new physics,
and assessments of the interplay between direct dark matter searches and the
LHC.
