  The production of light neutral mesons in different collision systems is
interesting for a variety of reasons: In nucleus-nucleus (AA) collisions the
measurements provide important information on the energy loss of partons
traversing the Quark-Gluon Plasma (QGP) which is formed in heavy-ion collisions
at the LHC. In proton--proton (pp) collisions, neutral mesons allow us to test
with high precision the predictions of perturbative QCD and other model
calculations, and also serve as a reference for pA and AA collisions. In pA
collisions, cold nuclear matter effects are studied. In the ALICE experiment,
which is dedicated to the study of the QGP, neutral mesons can be detected via
their decay to two photons. The latter can be reconstructed using the two
calorimeters EMCal and PHOS or via conversions in the detector material.
Combining state-of-the-art reconstruction techniques with the large data sample
delivered by the LHC in Run 2 gives us the opportunity to enhance the precision
of our measurements. In these proceedings, an overview of neutral meson
production in pp, p--Pb and Pb--Pb collisions at LHC energies, as measured with
the ALICE detector is presented.
