  We discuss the post-Newtonian limit of multimetric gravity theories with $N
\geq 2$ metric tensors and a corresponding number of standard model copies, and
construct an extension of the parameterized post-Newtonian (PPN) formalism.
This extended formalism allows a characterization of multimetric gravity
theories by a set of constant parameters. The multimetric PPN parameters we
derive are a superset of the standard PPN parameters, which have been measured
using high-precision experiments in the solar system. We apply our formalism to
a class of theories which we previously discussed in the context of cosmology
and gravitational waves, and which feature an accelerating expansion of the
universe. A comparison between our results and the measured PPN parameters
shows that multimetric gravity is fully compatible with solar system
observations.
