  The main experimental results on jet production at HERA are reviewed. A study
of jet shapes shows that the internal structure of jets is well understood. The
potential to accurately determine the strong coupling constant using jet rates
is discussed. First attempts to extract the gluon density in next-to-leading
order are presented. Although fixed order perturbative QCD is able to describe
the shape of most variables associated to the hard subprocess leading to jets,
it does not reproduce the absolute dijet rate over a large phase space region.
