  Modified Newtonian dynamics (MOND) is an empirical theory originally proposed
to explain the rotation curves of spiral galaxies by modifying the
gravitational acceleration, rather than by invoking dark matter. Here,we set
constraints on MOND using an up-to-date compilation of kinematic tracers of the
Milky Way and a comprehensive collection of morphologies of the baryonic
component in the Galaxy. In particular, we find that the so-called "standard"
interpolating function cannot explain at the same time the rotation curve of
the Milky Way and that of external galaxies for any of the baryonic models
studied, while the so-called "simple" interpolating function can for a subset
of models. Upcoming astronomical observations will refine our knowledge on the
morphology of baryons and will ultimately confirm or rule out the validity of
MOND in the Milky Way. We also present constraints on MOND-like theories
without making any assumptions on the interpolating function.
