  Thanks to the Fermi gamma-ray satellite and the current Imaging Atmospheric
Cherenkov Telescopes, radio galaxies have arisen as a new class of high- and
very-high energy emitters. The favourable orientation of their jets makes radio
galaxies extremely relevant in addressing important issues such as: (i)
revealing the jet structure complexity; (ii) localising the emitting region(s)
of high- and very-high energy radiation; (iii) understanding the physical
processes producing these photons. In this review the main results on the
gamma-ray emission studies of radio galaxies from the MeV to TeV regimes will
be presented, and the impact of future Cherenkov Telescope Array observations
will be discussed.
